There were a number of QA errors being reported when packaging cairo. This patch
ensures the debug files go in the -dbg package, the .so development links go into
the -dev package, .a files into -staticdev.
It also switches back to relying on debian package naming for the library name.
Since this is working correctly now the files are in the correct packages, we
can simplify the recipe and there is no change in the resulting package names
from a package feed perspective.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
