Make libdir and bindir being accepted by libs and modules

add a setting called --modinstdir to be able to define where modules get installed


git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@7663 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/endpoints/mod_sofia/Makefile.am

@@ -8,7 +8,7 @@ AM_MAKEFLAGS=`test -n "$(VERBOSE)" || echo -s`
 # Dirty trick to override the link output
 LIBS+=> $(MODNAME).log || error="yes";if test -n "$(VERBOSE)" -o "$$error" = "yes";then cat $(MODNAME).log;fi;if test "$$error" = "yes";then exit 1;fi
 
-moddir=$(prefix)/mod
+moddir=@modinstdir@
 
 MODNAME=mod_sofia