- revert a part that was introduced with the PROJECT changes.

  fixes unability to build a kernel (failed to find rule .patched)

target/linux/Makefile.in

@@ -58,7 +58,7 @@ endif
 LINUX26_KERNEL=$(BINARIES_DIR)/linux-kernel-$(LINUX26_VERSION)-$(KERNEL_ARCH)
 
 # Version of Linux AFTER patches
-LINUX26_DIR=$(PROJECT_BUILD_DIR)/linux-$(LINUX26_VERSION)
+LINUX26_DIR=$(BUILD_DIR)/linux-$(LINUX26_VERSION)
 
 # for packages that need it
 LINUX_VERSION:=$(LINUX_VERSION)
@@ -89,10 +89,10 @@ $(DL_DIR)/$(LINUX26_SOURCE):
 
 $(LINUX26_DIR)/.unpacked: $(DL_DIR)/$(LINUX26_SOURCE)
 	rm -rf $(LINUX26_DIR)
-	$(LINUX26_BZCAT) $(DL_DIR)/$(LINUX26_SOURCE) | tar -C $(PROJECT_BUILD_DIR) $(TAR_OPTIONS) -
+	$(LINUX26_BZCAT) $(DL_DIR)/$(LINUX26_SOURCE) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
 ifneq ($(DOWNLOAD_LINUX26_VERSION),$(LINUX26_VERSION))
 	# Rename the dir from the downloaded version to the AFTER patch version
-	mv -f $(PROJECT_BUILD_DIR)/linux-$(DOWNLOAD_LINUX26_VERSION) $(LINUX26_DIR)
+	mv -f $(BUILD_DIR)/linux-$(DOWNLOAD_LINUX26_VERSION) $(LINUX26_DIR)
 endif
 	touch $@