build: Print whether shared-glapi is enabled

Tested-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
diff --git a/configure.ac b/configure.ac
index 10d7b66..2fe04ab 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2199,6 +2199,7 @@
 echo ""
 echo "        Shared libs:     $enable_shared"
 echo "        Static libs:     $enable_static"
+echo "        Shared-glapi:    $enable_shared_glapi"
 
 dnl Compiler options
 # cleanup the CFLAGS/CXXFLAGS/DEFINES vars