Don't mangle patch file line endings in all directories

Previous version would only look in the root dir which obviously doesn't work.

Author: Tim Hutt

.gitattributes

@@ -16,5 +16,5 @@ windows/NewGuidCmd.exe.config text eol=crlf
 windows/NewGuidCmd.exe binary
 
 # Prevent git changing CR-LF to LF when archiving (patch requires CR-LF on Windows).
-*.patch            -text
+**/*.patch            -text