Vote: Adding flex/bison derived files in WIN32_DEV

Because MinGW/Msys doesn't come with flex/bison by default, I have added
those derived files to the WIN32_DEV branch in CVS.  It makes it easier
for people to install _just_ MinGW and compile PostgreSQL on Win32.  The
branch will live for only 1-2 months until we start 7.5 development. 
Those files will not be moved into the main branch.

Should those files be in WIN32_DEV CVS, or should they be removed, and
require people to install bison/flex on MinGW.  Even though they will
be updated infrequently, there is concern about CVS file bloat.

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
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