configure & compiler warning cleanup
- configure: Use
LT_INIT
from libtool 2 instead of deprecatedAC_PROG_LIBTOOL
- Add X.Org's standard C warning flags to
AM_CFLAGS
- Handle 2
-Wmissing-prototypes
warnings - Fix
-Wunused-variable
warning
LT_INIT
from libtool 2 instead of deprecated AC_PROG_LIBTOOL
AM_CFLAGS
-Wmissing-prototypes
warnings-Wunused-variable
warning