pginstaller - pginst: Check if specified service account has the "Log on

Log Message:
-----------
Check if specified service account has the "Log on as a service" right. If not, ask if this right is to be granted, and
ifyes, then go ahead and grant it. 

Modified Files:
--------------
    pginst/ca:
        Makefile (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/ca/Makefile.diff?r1=1.4&r2=1.5)
        pginstca.c (r1.10 -> r1.11)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/ca/pginstca.c.diff?r1=1.10&r2=1.11)

Added Files:
-----------
    pginst/ca:
        user.c (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/ca/user.c?rev=1.1&content-type=text/x-cvsweb-markup)