pgsql: Not entirely sure when this broke, but libpq's VC++ build is

Log Message:
-----------
Not entirely sure when this broke, but libpq's VC++ build is currently
lacking pqsignal which is now required. This was found and fixed for
VC++ by Shachar Shemesh, I simply duplicated the fix for the Borland
makefile (untested, as I don't have that compiler).

Dave Page

Modified Files:
--------------
    pgsql/src/interfaces/libpq:
        bcc32.mak (r1.10 -> r1.11)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/bcc32.mak.diff?r1=1.10&r2=1.11)
        win32.mak (r1.27 -> r1.28)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/win32.mak.diff?r1=1.27&r2=1.28)