ustream-ssl: replace hardcoded 'lib' string to generic value
ustream-ssl: replace hardcoded 'lib' string to generic value

If libdir is other than /usr/lib/, then ustream-ssl fails with below
error in do_install task:

-- snip --
| mv: cannot stat ‘.../tmp_new2/work/corei7-64-montavista-linux/ustream-ssl/git-r0/image/usr/lib/libustream-ssl.so’: No such file or directory
-- snip --

Signed-off-by: Jagadeesh Krishnanjanappa <5a51f18efe73b4e7c26060f97674973df9c9f7ec@mvista.com>

kraj/meta-openwrt