modbuild/libpbuild: print warnings if deprecated functions are used

Pmodules/libpbuild.bash

@@ -720,9 +720,26 @@ pbuild::install_shared_libs() {
 
 ###############################################################################
 #
-# This is the main entry function called by modbuild!
+# The following two functions are the entry points called by modbuild!
 #
-pbuild.build_module() {
+
+declare yaml_config='yes'
+pbuild.build_module_legacy(){
+	yaml_config='no'
+	_build_module "$@"
+}
+readonly -f pbuild.build_module_legacy
+
+pbuild.build_module_yaml(){
+	_build_module "$@"
+}
+readonly -f pbuild.build_module_yaml
+
+#..............................................................................
+#
+# The real worker function.
+#
+_build_module() {
 	declare -gx module_name="$1"
 	declare -gx module_version="$2"
 	declare -gx module_release="$3"
@@ -1583,7 +1600,7 @@ pbuild.build_module() {
 	cleanup_modulefiles
 	std::info "* * * * *\n"
 }
-readonly -f pbuild.build_module
+readonly -f _build_module
 
 # Local Variables:
 # mode: sh

Pmodules/modbuild.in

@@ -436,7 +436,7 @@ build_modules_legacy() {
                 version="${tokens[0]#*/}"
                 release="${tokens[1]}"
                 with_modules=( "${tokens[@]:2}" )
-                pbuild.build_module \
+                pbuild.build_module_legacy \
                         "${name}" "${version}" \
                         "${release}" "${with_modules[@]}"
         done
@@ -647,7 +647,7 @@ build_modules_yaml(){
 					     "${relstage}" "${with_modules[@]}"
 				done < <(bash_expand "" ${deps[@]}|${awk} "${pattern}")
 			else
-				pbuild.build_module \
+				pbuild.build_module_yaml \
 				     "${name}" "${v##*/}" \
 				     "${relstage}"
 			fi
@@ -655,7 +655,6 @@ build_modules_yaml(){
 	done
 }
 
-
 build_modules() {
 	if [[ -n $(ls "${BUILDBLOCK_DIR}/files/${BNAME_VARIANTS}"*.yaml 2>/dev/null) ]]; then
 		build_modules_yaml "$@"