Merged in scorphus/pyyaml (pull request #9)

scanner: use infinitive verb after auxiliary word could
diff --git a/lib/yaml/scanner.py b/lib/yaml/scanner.py
index 3a14c3a..834f662 100644
--- a/lib/yaml/scanner.py
+++ b/lib/yaml/scanner.py
@@ -286,7 +286,7 @@
                     or self.index-key.index > 1024:
                 if key.required:
                     raise ScannerError("while scanning a simple key", key.mark,
-                            "could not found expected ':'", self.get_mark())
+                            "could not find expected ':'", self.get_mark())
                 del self.possible_simple_keys[level]
 
     def save_possible_simple_key(self):
@@ -313,7 +313,7 @@
             
             if key.required:
                 raise ScannerError("while scanning a simple key", key.mark,
-                        "could not found expected ':'", self.get_mark())
+                        "could not find expected ':'", self.get_mark())
 
             del self.possible_simple_keys[self.flow_level]
 
diff --git a/lib3/yaml/scanner.py b/lib3/yaml/scanner.py
index dacfbe7..c8d127b 100644
--- a/lib3/yaml/scanner.py
+++ b/lib3/yaml/scanner.py
@@ -286,7 +286,7 @@
                     or self.index-key.index > 1024:
                 if key.required:
                     raise ScannerError("while scanning a simple key", key.mark,
-                            "could not found expected ':'", self.get_mark())
+                            "could not find expected ':'", self.get_mark())
                 del self.possible_simple_keys[level]
 
     def save_possible_simple_key(self):
@@ -313,7 +313,7 @@
             
             if key.required:
                 raise ScannerError("while scanning a simple key", key.mark,
-                        "could not found expected ':'", self.get_mark())
+                        "could not find expected ':'", self.get_mark())
 
             del self.possible_simple_keys[self.flow_level]