Fix inclusion of 'tas.s' for various ports

Reported by:  Shiby Thomas <sthomas@cise.ufl.edu>

configure vs port specific #ifdef's...

The following patches will bring the UNIVEL port in line with the new porting
model used in postgreSQL 6.3

Hi -- a couple of small items concerning the January 23rd snapshot:
the inclusion of the Kerberos stuff in one Makefile, a "leading tab"
cleanup in another, and a fix for a typo in the configure script.

The attached patches will allow postgreSQL to compile successfully on SCO
UNIXWARE 2.1.x.  The patches fix the following problems:

1.  Configure did not properly recognize the UNIXWARE system as needing the
    univel port.  It used the sys4 port.

2.  Configure did not properly process the CC flag in the template file.

3.  There was no working test and set locking implementation for the native
    UNIXWARE compiler.

4.  The test and set locking used for Intel X86 that was selected by defining
    NEED_I386_TAS_ASM could fail in a multi-processor environment.

5.  The makefiles for libpq and libpgtcl did not make a shared library for
    the univel port.

tests running "as expected"...

it is (!isnan() && !finite()) instead

From: Tom I Helbekkmo <tih@Hamartun.Priv.NO>

Just got rid of PORTNAME altogether for FreeBSD and AIX...more to follow

start

functions...

Makefile.global.

End result, if all goes well, should allow for much easier porting, since
there will no longer be a concept of a "port".  Most, if not everything,
*should* be determined by configure, or by the compiler itself.  Still
work to be done though :)

I asked for this a long time ago and Frank Dana recently has
indicated that using lbsd on aix breaks the timezone code.

Add appropriate HAVE_{RANDOM,SRANDOM} values to config.h
Add approrpiate #ifdef's to sparc_solaris port files for Solaris v2.6

of assuming it does exist