When metadir is set, use that directory for any patch file (when building with local modifications to the source) instead of always using the '0install' directory.
When metadir is set, use that directory for any patch file (when building with local
modifications to the source) instead of always using the '0install' directory.


git-svn-id: 5a9471c9c4ebc038b65787f57a556de4c667038a@1234 9f8c893c-44ee-0310-b757-c8ca8341c71e

dabrahams/0compile,gfxmonk/0compile,0install/0compile,dabrahams/0compile,0install/0compile,timbertson/0compile,0install/0compile,gfxmonk/0compile,timbertson/0compile