Thread: pginstaller - pginst: Disable the initdb step when running on NT4.

Log Message:
-----------
Disable the initdb step when running on NT4. Previously it would just show a complicated error message about problems
innetapi32.dll. Instead, show a message informing the user that initdb is not supported on NT4, and prevent it from
beingenabled. 

Modified Files:
--------------
    pginst/ca:
        pginstca.c (r1.51 -> r1.52)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/ca/pginstca.c.diff?r1=1.51&r2=1.52)
    pginst/wxs:
        dialogs.wxs (r1.27 -> r1.28)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/wxs/dialogs.wxs.diff?r1=1.27&r2=1.28)
        pginst.wxs (r1.67 -> r1.68)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/wxs/pginst.wxs.diff?r1=1.67&r2=1.68)