Changes in version `1.5.1'
==========================
* Framework support rewritten, also supports multiple names.
* API change: Replace frameowork's xxx_TOOLS by xxx_COPY_INTO_DIR.
* Unified link commands between libraries and frameworks
(LIB_LINK_*).
* New 'make strings' target for localization support.
* Speed improvements.
* Doesn't try to build OSX bundle on GNUstep and vice versa.
* API change: Tools/Subproj can have resources.
* API change: TOOL_INSTALL_DIR.
Add some missing environment variables needed by the GNUstep build system
Include GNUstep binary directories in PATH
Include some missing header files in buildlink list
Bump PKGREVISION