Add XIPH_CFLAGS which will be used to pass compiler flags which you

don't want to get clobbered by things like make CFLAGS='....'
The typical flags you don't want clobbered are ones like -pthread

svn path=/trunk/icecast/; revision=4436

configure.in

@@ -182,5 +182,6 @@ AC_SUBST(LIBS)
 AC_SUBST(DEBUG)
 AC_SUBST(CFLAGS)
 AC_SUBST(PROFILE)
+AC_SUBST(XIPH_CFLAGS)
 
 AC_OUTPUT(Makefile conf/Makefile src/Makefile src/avl/Makefile src/httpp/Makefile src/thread/Makefile src/log/Makefile src/net/Makefile src/timing/Makefile doc/Makefile web/Makefile win32/Makefile win32/res/Makefile)