Add CFLAGS= @CPPFLAGS@ to Makefile.global and configure so that build is
	useful for finding extra header files

Split header files from libraries in build.  Doesn't make much sense to
	look for a header file in /usr/local/lib, nor to look for a library
	in /usr/local/include :)

basis, as its only specific to certain OSs

Developers can add it to their Makefile.custom...again, it causes sooooo many
more problems then its worth, from an end-user standpoint.

to be committed...

Must find alternate solution to libpq shared library build problem.

all the other port related dependencies are ifeq, not ifneq..

If I'm wrong, someone tell me or change it back...

gmake of the code without interruption.

There's also some tidy-up of the MAXPATHLEN stuff based on the assumption that
all supported platforms have MAXPATHLEN defined in <sys/param.h>.

(The only unknowns for the above are AIX and IRIX5.)

feature dependencies.  Thanks Kurt J. Lidl.

so you can also link pgtclsh.