package: Force copy of .la files at the post install hook (readonly files might be problematic)

Signed-off-by: Lionel Landwerlin <llandwerlin@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/Makefile.autotools.in

@@ -201,7 +201,7 @@ ifndef $(2)_INSTALL_STAGING_CMDS
 define $(2)_INSTALL_STAGING_CMDS
 	$$($$(PKG)_MAKE_ENV) $$($$(PKG)_MAKE) $$($$(PKG)_INSTALL_STAGING_OPT) -C $$($$(PKG)_SRCDIR)
 	for i in $$$$(find $(STAGING_DIR)/usr/lib* -name "*.la"); do \
-		cp $$$$i $$$$i~; \
+		cp -f $$$$i $$$$i~; \
 		$$(SED) "s:\(['= ]\)/usr:\\1$(STAGING_DIR)/usr:g" $$$$i; \
 	done
 endef