libsdl 1.2.14: fix packaging

libsdl 1.2.14: fix packaging

For some reason the -config script was shipped in ${PN} leading to shlibs renaming issues:

What we want, and how meta-oe used to do it:
	libsdl-1.2-0_1.2.14-r0.0_armv7a.ipk

Current OE-core status:
	libsdl_1.2.14-r2_armv7a.ipk

With this commit we get both proper shlib renaming and the -dev package now has all the dev files

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>