Updates gtest.xcodeproj to be compatible with OS X 10.8.4 & Xcode 4.6.3
diff --git a/xcode/gtest.xcodeproj/project.pbxproj b/xcode/gtest.xcodeproj/project.pbxproj
index da6455b..0452a63 100644
--- a/xcode/gtest.xcodeproj/project.pbxproj
+++ b/xcode/gtest.xcodeproj/project.pbxproj
@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 42;
+	objectVersion = 46;
 	objects = {
 
 /* Begin PBXAggregateTarget section */
@@ -580,8 +580,12 @@
 /* Begin PBXProject section */
 		0867D690FE84028FC02AAC07 /* Project object */ = {
 			isa = PBXProject;
+			attributes = {
+				LastUpgradeCheck = 0460;
+			};
 			buildConfigurationList = 4FADC24608B4156D00ABE55E /* Build configuration list for PBXProject "gtest" */;
-			compatibilityVersion = "Xcode 2.4";
+			compatibilityVersion = "Xcode 3.2";
+			developmentRegion = English;
 			hasScannedForEncodings = 1;
 			knownRegions = (
 				English,
@@ -789,20 +793,25 @@
 		3B238F600E828B5400846E11 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				COMBINE_HIDPI_IMAGES = YES;
 				COPY_PHASE_STRIP = NO;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_OPTIMIZATION_LEVEL = 0;
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				PRODUCT_NAME = Check;
+				SDKROOT = macosx;
 			};
 			name = Debug;
 		};
 		3B238F610E828B5400846E11 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				COMBINE_HIDPI_IMAGES = YES;
 				COPY_PHASE_STRIP = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
-				GCC_ENABLE_FIX_AND_CONTINUE = NO;
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				PRODUCT_NAME = Check;
+				SDKROOT = macosx;
 				ZERO_LINK = NO;
 			};
 			name = Release;
@@ -810,37 +819,49 @@
 		40899F450FFA7185000B29AE /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				HEADER_SEARCH_PATHS = ../;
 				PRODUCT_NAME = "gtest_unittest-framework";
+				SDKROOT = macosx;
 			};
 			name = Debug;
 		};
 		40899F460FFA7185000B29AE /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				HEADER_SEARCH_PATHS = ../;
 				PRODUCT_NAME = "gtest_unittest-framework";
+				SDKROOT = macosx;
 			};
 			name = Release;
 		};
 		4089A0150FFACEFD000B29AE /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				PRODUCT_NAME = "sample1_unittest-framework";
+				SDKROOT = macosx;
 			};
 			name = Debug;
 		};
 		4089A0160FFACEFD000B29AE /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				PRODUCT_NAME = "sample1_unittest-framework";
+				SDKROOT = macosx;
 			};
 			name = Release;
 		};
 		40C44ADF0E3798F4008FCC51 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				COMBINE_HIDPI_IMAGES = YES;
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
+				MACOSX_DEPLOYMENT_TARGET = 10.7;
 				PRODUCT_NAME = gtest;
+				SDKROOT = macosx;
 				TARGET_NAME = gtest;
 			};
 			name = Debug;
@@ -848,7 +869,11 @@
 		40C44AE00E3798F4008FCC51 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				COMBINE_HIDPI_IMAGES = YES;
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
+				MACOSX_DEPLOYMENT_TARGET = 10.7;
 				PRODUCT_NAME = gtest;
+				SDKROOT = macosx;
 				TARGET_NAME = gtest;
 			};
 			name = Release;
@@ -857,13 +882,16 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 40899FB30FFA7567000B29AE /* StaticLibraryTarget.xcconfig */;
 			buildSettings = {
+				COMBINE_HIDPI_IMAGES = YES;
 				GCC_INLINES_ARE_PRIVATE_EXTERN = YES;
 				GCC_SYMBOLS_PRIVATE_EXTERN = YES;
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				HEADER_SEARCH_PATHS = (
 					../,
 					../include/,
 				);
 				PRODUCT_NAME = gtest;
+				SDKROOT = macosx;
 			};
 			name = Debug;
 		};
@@ -871,13 +899,16 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 40899FB30FFA7567000B29AE /* StaticLibraryTarget.xcconfig */;
 			buildSettings = {
+				COMBINE_HIDPI_IMAGES = YES;
 				GCC_INLINES_ARE_PRIVATE_EXTERN = YES;
 				GCC_SYMBOLS_PRIVATE_EXTERN = YES;
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				HEADER_SEARCH_PATHS = (
 					../,
 					../include/,
 				);
 				PRODUCT_NAME = gtest;
+				SDKROOT = macosx;
 			};
 			name = Release;
 		};
@@ -885,11 +916,14 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 40899FB30FFA7567000B29AE /* StaticLibraryTarget.xcconfig */;
 			buildSettings = {
+				COMBINE_HIDPI_IMAGES = YES;
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				HEADER_SEARCH_PATHS = (
 					../,
 					../include/,
 				);
 				PRODUCT_NAME = gtest_main;
+				SDKROOT = macosx;
 			};
 			name = Debug;
 		};
@@ -897,41 +931,52 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 40899FB30FFA7567000B29AE /* StaticLibraryTarget.xcconfig */;
 			buildSettings = {
+				COMBINE_HIDPI_IMAGES = YES;
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				HEADER_SEARCH_PATHS = (
 					../,
 					../include/,
 				);
 				PRODUCT_NAME = gtest_main;
+				SDKROOT = macosx;
 			};
 			name = Release;
 		};
 		40C84985101A36850083642A /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				HEADER_SEARCH_PATHS = ../;
 				PRODUCT_NAME = gtest_unittest;
+				SDKROOT = macosx;
 			};
 			name = Debug;
 		};
 		40C84986101A36850083642A /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				HEADER_SEARCH_PATHS = ../;
 				PRODUCT_NAME = gtest_unittest;
+				SDKROOT = macosx;
 			};
 			name = Release;
 		};
 		40C84995101A36A60083642A /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				PRODUCT_NAME = "sample1_unittest-static";
+				SDKROOT = macosx;
 			};
 			name = Debug;
 		};
 		40C84996101A36A60083642A /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				PRODUCT_NAME = "sample1_unittest-static";
+				SDKROOT = macosx;
 			};
 			name = Release;
 		};
@@ -939,8 +984,10 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 40D4CDF20E30E07400294801 /* FrameworkTarget.xcconfig */;
 			buildSettings = {
+				COMBINE_HIDPI_IMAGES = YES;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				HEADER_SEARCH_PATHS = (
 					../,
 					../include/,
@@ -949,6 +996,7 @@
 				INFOPLIST_PREFIX_HEADER = "$(PROJECT_TEMP_DIR)/Version.h";
 				INFOPLIST_PREPROCESS = YES;
 				PRODUCT_NAME = gtest;
+				SDKROOT = macosx;
 				VERSIONING_SYSTEM = "apple-generic";
 			};
 			name = Debug;
@@ -957,8 +1005,10 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 40D4CDF20E30E07400294801 /* FrameworkTarget.xcconfig */;
 			buildSettings = {
+				COMBINE_HIDPI_IMAGES = YES;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
+				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				HEADER_SEARCH_PATHS = (
 					../,
 					../include/,
@@ -967,6 +1017,7 @@
 				INFOPLIST_PREFIX_HEADER = "$(PROJECT_TEMP_DIR)/Version.h";
 				INFOPLIST_PREPROCESS = YES;
 				PRODUCT_NAME = gtest;
+				SDKROOT = macosx;
 				VERSIONING_SYSTEM = "apple-generic";
 			};
 			name = Release;