[packages] shadow: revert r36612 and use r36574

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/packages@36613 3c298f89-4303-0410-b956-a3cf2f4a3e73
[packages] postgresql: fix visibility issues with libpq

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/packages@36614 3c298f89-4303-0410-b956-a3cf2f4a3e73