php needs to know where to find postgresql headers.
$pkg_postgresql_prefix created for the purpose


git-svn-id: http://www.rocklinux.org/svn/rock-linux/trunk@2234 c5f82cb5-29bc-0310-9cd0-bff59a50e3bc

Changed postgresql to default to install into /opt/postgresql
The ROCK's unwritten standard said this kind of things should go to opt/$pkg
and should be changeable by targets.


git-svn-id: http://www.rocklinux.org/svn/rock-linux/trunk@2062 c5f82cb5-29bc-0310-9cd0-bff59a50e3bc

git-svn-id: http://www.rocklinux.org/svn/rock-linux/trunk@946 c5f82cb5-29bc-0310-9cd0-bff59a50e3bc