minor performance improvement for platforms where -fPIC and -fpic are actually different (has no effect on x86/x86-64)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@43166 65c4cc65-6c06-0410-ace0-fbb531ad65f3

Makefile.moddir_rules

@@ -34,7 +34,7 @@ endef
 
 define module_so_template
 $(1)=$(1).so
-$(1).so: CFLAGS+=-fPIC
+$(1).so: CFLAGS+=-fpic
 $(1).so: LIBS+=$(foreach dep,$(MENUSELECT_DEPENDS_$(1)),$$(value $(dep)_LIB))
 $(1).so: LDFLAGS+=$(foreach dep,$(MENUSELECT_DEPENDS_$(1)),$$(value $(dep)_LDFLAGS))
 $(1).so: $(2)