6.4 fixes.

The attached patches fix the following problems:

1.  The UnixWare tas macro was reformatted (by indent or it like?) which caused
    it to break.  The asm macro construct is very particular about the %mem
    construct -- it has to start in column 1.

2.  When compiling libpq++, g++ was used even if configure found the C++ com-
    piler to be CC.

3.  When compiling libpq++, '-Wno-error' was added to CXXFLAGS, even if the
    compiler wasn't g++.

Open issues with the UnixWare 7 port:

1.  Connecting using the AF_UNIX family does not work correctly.  The first
    connection works fine.  Re-connecting (i.e. \connect within psql) fails.
    This is a low priority item with me since connections via AF_INET work
    without problems.

____       | Billy G. Allie    | Domain....: Bill.Allie@mug.org
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