do not call ldconfig when cross-compiling

package/libpri/patches/patch-Makefile

@@ -0,0 +1,10 @@
+--- libpri-1.4.10.2.orig/Makefile	2008-08-06 20:20:51.000000000 +0200
++++ libpri-1.4.10.2/Makefile	2010-05-29 09:55:08.750000000 +0200
+@@ -146,7 +146,6 @@ $(STATIC_LIBRARY): $(STATIC_OBJS)
+ 
+ $(DYNAMIC_LIBRARY): $(DYNAMIC_OBJS)
+ 	$(CC) -shared $(SOFLAGS) -o $@ $(DYNAMIC_OBJS)
+-	$(LDCONFIG) $(LDCONFIG_FLAGS) .
+ 	ln -sf libpri.so.$(SONAME) libpri.so
+ 
+ version.c: FORCE