[Build-System] Add a local pc file for use with out of tree mods built in tree.

build/standalone_module/freeswitch.pc.in

@@ -0,0 +1,25 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@switch_builddir@
+libexecdir=@libexecdir@
+includedir=@switch_srcdir@/src/include
+modulesdir=@modulesdir@
+runtimedir=@runtimedir@
+logfiledir=@logfiledir@
+sysconfdir=@sysconfdir@
+confdir=@confdir@
+dbdir=@dbdir@
+htdocsdir=@htdocsdir@
+localstatedir=@localstatedir@
+grammardir=@grammardir@
+soundsdir=@soundsdir@
+scriptdir=@scriptdir@
+recordingsdir=@recordingsdir@
+bindir=@bindir@
+
+Name: freeswitch
+Version: @PACKAGE_VERSION@
+Description: FreeSWITCH open source telephony platform
+Libs: -L${libdir} -lfreeswitch
+Cflags: -I${includedir} -I@switch_builddir@/src/include -I@switch_srcdir@/libs/libteletone/src
+

configure.ac

@@ -2033,6 +2033,7 @@ AC_CONFIG_FILES([Makefile
 		build/getlib.sh
 		build/getg729.sh
 		build/freeswitch.pc
+		build/standalone_module/freeswitch.pc
 		build/modmake.rules
                 libs/esl/Makefile
                 libs/esl/perl/Makefile