Fix this long-neglected port, which kept bit-rotting over years of

sweeping changes to the tree:

	* Use the SUB_FILES mechanism instead of modifying the
	  wrapper ourselves;
	* Support staging
	* Use PREFIX as appropriate instead of LOCALBASE.
	* Clarify the NO_PACKAGE message and stop using quotes with it.

These old binaries require last century's ld-linux.so.1 and libc5
versions of certain libraries. Because no port remains under
emulation/ that provides them, fetch and use the old RedHat's RPMs
for ld.so-1 and libc-5. The needed bits from the former are stuck
into ${LINUXBASE}/compat/lib (despite portlint's encouragements to
the contrary). The latter's pieces are unpacked into the new
subdirectory under the package's own install tree (Wingz3/lib/libc5).

Modify the wrapper script to set LD_LIBRARY_PATH to include the above
directory and to set XLOCALEDIR to the modern location of locale-files
(the old libraries still look for them under /usr/X11R6/lib/X11/locale).

Should another port ever need these old Linux libraries, I'd be happy to
cooperate on placing them into a port of their own.

Bump PORTREVISION.

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