Move 'Mac_files' folder to 'extra' one

* Mac_files: Move to "extra" folder.
* Makefile.am (EXTRA_DIST): Update references to Mac_files.
* Makefile.direct (OTHER_MAKEFILES): Likewise.
* Makefile.dj (OTHER_MAKEFILES): Likewise.
* doc/README.Mac: Update reference to MacOS_config.h file.

Makefile.am

@@ -182,7 +182,8 @@ EXTRA_DIST += tools/add_gc_prefix.c tools/gcname.c tools/if_mach.c \
     extra/global_end.cpp extra/global_start.cpp \
     extra/init_global_static_roots.cpp extra/symbian.cpp \
     build/s60v3/bld.inf build/s60v3/libgc.mmp \
-    Mac_files/datastart.c Mac_files/dataend.c Mac_files/MacOS_config.h \
+    extra/Mac_files/datastart.c extra/Mac_files/dataend.c \
+    extra/Mac_files/MacOS_config.h \
     include/private/msvc_dbg.h extra/msvc_dbg.c tools/callprocs.sh
 
 #

Makefile.direct

@@ -142,8 +142,8 @@ OTHER_MAKEFILES= OS2_MAKEFILE NT_MAKEFILE gc.mak \
   build_atomic_ops.sh build_atomic_ops.sh.cygwin
 
 OTHER_FILES= tools/setjmp_t.c tools/callprocs.sh extra/MacOS.c \
-  Mac_files/datastart.c Mac_files/dataend.c Mac_files/MacOS_config.h \
-  tools/add_gc_prefix.c gc_cpp.cpp \
+  extra/Mac_files/datastart.c extra/Mac_files/dataend.c \
+  extra/Mac_files/MacOS_config.h tools/add_gc_prefix.c gc_cpp.cpp \
   extra/global_end.cpp extra/global_start.cpp \
   extra/init_global_static_roots.cpp extra/symbian.cpp \
   build/s60v3/bld.inf build/s60v3/libgc.mmp \

Makefile.dj

@@ -66,9 +66,9 @@ OTHER_FILES= PCR-Makefile OS2_MAKEFILE NT_MAKEFILE BCC_MAKEFILE \
            doc/README.amiga doc/README.win32 doc/README.cords \
            doc/README.rs6000 README.QUICK TODO tools/callprocs.sh \
            pc_excludes barrett_diagram doc/README.OS2 doc/README.Mac \
-           extra/MacOS.c EMX_MAKEFILE \
-           doc/README.debugging Mac_files/datastart.c Mac_files/dataend.c \
-           Mac_files/MacOS_config.h \
+           extra/MacOS.c EMX_MAKEFILE doc/README.debugging \
+           extra/Mac_files/datastart.c extra/Mac_files/dataend.c \
+           extra/Mac_files/MacOS_config.h \
            tools/add_gc_prefix.c doc/README.solaris2 doc/README.sgi \
            doc/README.hp doc/README.uts win32_threads.c gc.mak doc/README.dj \
            Makefile.dj doc/README.alpha doc/README.linux WCC_MAKEFILE

doc/README.Mac

@@ -12,7 +12,7 @@ are distributed in the file Mac_projects.sit.hqx. The project file
 :Mac_projects:gctest.prj builds the GC test suite.
 
 Configuring the collector is still done by editing the file
-:Mac_files:MacOS_config.h.
+:extra:Mac_files:MacOS_config.h.
 
 Lars Farm's suggestions on building the collector:
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