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/openaes/Android.mk b/openaes/Android.mk
index 360cf6c..336ebdd 100644
--- a/openaes/Android.mk
+++ b/openaes/Android.mk
@@ -5,8 +5,8 @@
 	# Build shared binary
 	LOCAL_SRC_FILES:= src/oaes.c \
 	LOCAL_C_INCLUDES := \
-		bootable/recovery/openaes/src/isaac \
-		bootable/recovery/openaes/inc
+		$(commands_recovery_local_path)/openaes/src/isaac \
+		$(commands_recovery_local_path)/openaes/inc
 	LOCAL_CFLAGS:= -g -c -W
 	LOCAL_MODULE:=openaes
 	LOCAL_MODULE_TAGS:= eng
@@ -20,8 +20,8 @@
 	LOCAL_MODULE := libopenaes
 	LOCAL_MODULE_TAGS := eng
 	LOCAL_C_INCLUDES := \
-		bootable/recovery/openaes/src/isaac \
-		bootable/recovery/openaes/inc
+		$(commands_recovery_local_path)/openaes/src/isaac \
+		$(commands_recovery_local_path)/openaes/inc
 	LOCAL_SRC_FILES = src/oaes_lib.c src/isaac/rand.c
 	LOCAL_SHARED_LIBRARIES = libc
 	include $(BUILD_SHARED_LIBRARY)
@@ -31,8 +31,8 @@
 	LOCAL_MODULE := libopenaes_static
 	LOCAL_MODULE_TAGS := eng
 	LOCAL_C_INCLUDES := \
-		bootable/recovery/openaes/src/isaac \
-		bootable/recovery/openaes/inc
+		$(commands_recovery_local_path)/openaes/src/isaac \
+		$(commands_recovery_local_path)/openaes/inc
 	LOCAL_SRC_FILES = src/oaes_lib.c src/isaac/rand.c
 	LOCAL_STATIC_LIBRARIES = libc
 	include $(BUILD_STATIC_LIBRARY)