Fix PulseAudio compilation with shave
Fix PulseAudio compilation with shave

libtool (a shell script) needs CC in a few cases. Thus CC value needs to be
valid for a shell script, something I did not realize until now. Instead
of having CC/CXX/LIBTOOL use Makefile's variables, let's just expand
them at ./configure time

Signed-off-by: Damien Lespiau <64bd3cb94f359c1a3ce68dae5e26b40578526277@gmail.com>

freedesktop-unofficial-mirror/shave,freedesktop-unofficial-mirror/shave,kusma/shave,freedesktop-unofficial-mirror/shave,kusma/shave