Build block TWRP with RECOVERY_VARIANT

Enable TWRP to reside alongside other recoveries with the naming
convention: bootable/recovery(-flag). If TWRP resides at
bootable/recovery and a device does not specify RECOVERY_VARIANT, then
it will build like normal. If TWRP resides at bootable/recovery-twrp,
then its makefiles will only be parsed if a device specifies
'RECOVERY_VARIANT := twrp'. This prevents TWRP specific makefile
warnings/errors (notably, missing DEVICE_RESOLUTION) when another
recovery is being built.

Change-Id: I8f02fffcd79c309c7123b9428eedc69af02e126e
diff --git a/crypto/crypttools/Android.mk b/crypto/crypttools/Android.mk
index a2f8dfe..fc62583 100644
--- a/crypto/crypttools/Android.mk
+++ b/crypto/crypttools/Android.mk
@@ -10,6 +10,6 @@
 LOCAL_MODULE_CLASS := UTILITY_EXECUTABLES
 LOCAL_MODULE_PATH := $(PRODUCT_OUT)/utilities
 LOCAL_FORCE_STATIC_EXECUTABLE := true
-LOCAL_C_INCLUDES := bootable/recovery/crypto/jb/
+LOCAL_C_INCLUDES := $(commands_recovery_local_path)/crypto/jb/
 include $(BUILD_EXECUTABLE)
 endif
\ No newline at end of file