[Zlib-devel] Misc build fixups

[Mark Adler]

All,

I have no problem with leaving treebuild.xml in there, so long as it is kept updated to the current version of zlib.

One thing I wonder about the contents: zconf.h and zlibdefs.h are repeated for each source file, though they are included indirectly.  To actually duplicate the structure in the source files, some would depend only zlib.h, and there would be an entry for zlib.h depending on zconf.h, and an entry for zconf.h depending on zlibdefs.h.

Similarly those that depend on zutil.h don't depend directly on zlib.h, etc.  Instead there would be a zutil.h entry that depends on zlib.h.

Mark