[packages] socat: update to 1.7.2.1 (CVE-2012-0219), use CONFIGURE_{ARGS,VARS}

[packages] socat: update to 1.7.2.1 (CVE-2012-0219), use CONFIGURE_{ARGS,VARS}

- Update socat to 1.7.2.0
(main reason: avoids compile-error against kernel 3.3.5 with ext2_fs.h which seems to got removed/changed to not being used from userspace from current kernel)
- remove 502-no_sslv2.patch which doesn't apply surely and looks quite outdated to me, socat isn't linked against *ssl* anyway, compiles and works fine, verified on ar71xx

Michael

Signed-off-by: Michael Markstaller <mm@elabnet.de>
git-svn-id: svn://svn.openwrt.org/openwrt/packages@31818 3c298f89-4303-0410-b956-a3cf2f4a3e73