Enable the obsequi application for Darwin. It seems to run with no issues.

llvm-svn: 366277
diff --git a/MultiSource/Applications/CMakeLists.txt b/MultiSource/Applications/CMakeLists.txt
index 9d8949d..a73acd5 100644
--- a/MultiSource/Applications/CMakeLists.txt
+++ b/MultiSource/Applications/CMakeLists.txt
@@ -21,7 +21,7 @@
 if(NOT DEFINED SMALL_PROBLEM_SIZE)
   add_subdirectory(lua)
 endif()
-if(TARGET_OS STREQUAL "Linux" AND (NOT ARCH STREQUAL "XCore"))
+if((TARGET_OS STREQUAL "Linux" OR TARGET_OS STREQUAL "Darwin") AND (NOT ARCH STREQUAL "XCore"))
   add_subdirectory(obsequi)
 endif()
 if(NOT TARGET_OS STREQUAL "SunOS")