Make doxygen scan subdirs recursively

git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@1467 4407c894-4637-0410-b4f5-ada5f102cad1
diff --git a/mingw-w64-libraries/libmangle/Doxyfile b/mingw-w64-libraries/libmangle/Doxyfile
index f2c02f6..51adc67 100644
--- a/mingw-w64-libraries/libmangle/Doxyfile
+++ b/mingw-w64-libraries/libmangle/Doxyfile
@@ -88,7 +88,7 @@
 INPUT                  = 
 INPUT_ENCODING         = UTF-8
 FILE_PATTERNS          = 
-RECURSIVE              = NO
+RECURSIVE              = yes
 EXCLUDE                = 
 EXCLUDE_SYMLINKS       = NO
 EXCLUDE_PATTERNS       =