AA: asterisk-chan-sccp-b: fix PKG_SOURCE_URL, URL, maintainer and dependency

This patch fixes asterisk-chan-sccp-b dependency that breaks asterisk18
menu in openwrt menuconfig, fixes SVN repo URL (HTTP 404 error), project
URL (also HTTP error 404) and removes package maintainer variable.

Signed-off-by: Jiri Slachta <slachta@cesnet.cz>

git-svn-id: svn://svn.openwrt.org/openwrt/branches/packages_12.09@36750 3c298f89-4303-0410-b956-a3cf2f4a3e73
AA: miniupnpd: merge r36011, r36057


git-svn-id: svn://svn.openwrt.org/openwrt/branches/packages_12.09@36844 3c298f89-4303-0410-b956-a3cf2f4a3e73
AA: merge r36843


git-svn-id: svn://svn.openwrt.org/openwrt/branches/packages_12.09@36845 3c298f89-4303-0410-b956-a3cf2f4a3e73
AA: vnstat: merge r36716 (#13577)


git-svn-id: svn://svn.openwrt.org/openwrt/branches/packages_12.09@36846 3c298f89-4303-0410-b956-a3cf2f4a3e73
AA: mjpg-streamer: merge r37929

git-svn-id: svn://svn.openwrt.org/openwrt/branches/packages_12.09@37930 3c298f89-4303-0410-b956-a3cf2f4a3e73