Log Message:
-----------
Only run contrib check if there is a Makefile
Modified Files:
--------------
pgsql/src/tools/msvc:
vcregress.bat (r1.9 -> r1.10)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tools/msvc/vcregress.bat.diff?r1=1.9&r2=1.10)