Exclude .svn and .git directories from doxygen documentation.

Originally committed as revision 21229 to svn://svn.ffmpeg.org/ffmpeg/trunk

Doxyfile

@@ -370,7 +370,7 @@ EXCLUDE_SYMLINKS       = NO
 # EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude
 # certain files from those directories.
 
-EXCLUDE_PATTERNS       =
+EXCLUDE_PATTERNS       = *.svn *.git
 
 # The EXAMPLE_PATH tag can be used to specify one or more files or
 # directories that contain example code fragments that are included (see