Update SDL_Pango to version 0.1.2 / rev 26 via SR 977981
https://build.opensuse.org/request/show/977981
by user jengelh + dimstar_suse
- Remove baselibs.conf, nothing appears to be using it.
- Change -devel subpackage to be based on SRPM/project name.
- Use pkgconfig(sdl) to build with sdl12_compat.