Update pg_regress calls in PL checks to handle vpath builds.
treea6ae7e4b8cc317f235a9c1dc2fa7af1143877a61
-rw-r--r-- 1192 COPYRIGHT
-rw-r--r-- 4205 GNUmakefile.in
-rw-r--r-- 1423 Makefile
-rw-r--r-- 1287 README
-rw-r--r-- 767 README.CVS
-rw-r--r-- 387 aclocal.m4
drwxr-xr-x - config
-rwxr-xr-x 763373 configure
-rw-r--r-- 59421 configure.in
drwxr-xr-x - contrib
drwxr-xr-x - doc
drwxr-xr-x - src