* Makefile.in (%_gc.lo): New pattern rules to build the
        garbage-collected version of the library.  Removed rules for
        specific files that are no longer needed.  Standardized all rules.
        (C_SOURCE_FILES, OBJC_SOURCE_FILES): New variables.
        (OBJS, OBJS_GC): Compute these from C_SOURCE_FILES and
        OBJC_SOURCE_FILES.
        (INCLUDES): Removed the unused include -I$(srcdir)/objc.

        * memory.c (objc_calloc): Fixed call to GC_malloc when building
        with Garbage Colletion.

From-SVN: r164231