Attached is a patch to deal with the ones that I missed the first time

Attached is a patch to deal with the ones that I missed the first time
around.  I tested this patch under Cygwin and Linux.

Note that I only changed dblink's Makefile in the most minimal way
to fix the link problem under Cygwin (i.e., use the link rule from
Makefile.shlib instead).  dblink's Makefile should probably be further
patched to be consistent with the other PostgreSQL Makefiles.

Jason Tishler