Add PATCH_DIR's for snapshots of uclibc and gdb

toolchain/gdb/gdb.mk

@@ -17,6 +17,7 @@ GDB_SITE:=ftp://sources.redhat.com/pub/gdb/snapshots/current
 GDB_SOURCE:=gdb.tar.bz2
 GDB_CAT:=$(BZCAT)
 GDB_DIR:=$(TOOL_BUILD_DIR)/gdb-$(GDB_VERSION)
+GDB_PATCH_DIR:=toolchain/gdb/$(GDB_VERSION)
 else
 
 ifeq	($(BR2_TOOLCHAIN_NORMAL),y)

toolchain/uClibc/uclibc.mk

@@ -20,6 +20,7 @@ UCLIBC_DIR:=$(TOOL_BUILD_DIR)/uClibc
 UCLIBC_SOURCE:=uClibc-$(strip $(subst ",, $(BR2_USE_UCLIBC_SNAPSHOT))).tar.bz2
 #"))
 UCLIBC_SITE:=http://www.uclibc.org/downloads/snapshots
+UCLIBC_PATCH_DIR:=toolchain/uClibc/
 else
 # releases
 ifeq ($(BR2_UCLIBC_VERSION_0_9_29),y)