screen: Update to version 4.2.1

This patch updates screen to version 4.2.1, released 2014/04/27.

Signed-off-by: Luis Dallos <ld@nkvd.ignorelist.com>


git-svn-id: svn://svn.openwrt.org/openwrt/packages@40607 3c298f89-4303-0410-b956-a3cf2f4a3e73
pv: bump to version 1.5.2

we got segfault with pv v1.2.0 on mpc85xx. So I updated it to the latest
v1.5.2 and it seems to be ok.

Signed-off-by: Martin Strbacka <martin.strbacka@nic.cz>


git-svn-id: svn://svn.openwrt.org/openwrt/packages@40608 3c298f89-4303-0410-b956-a3cf2f4a3e73