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/jb/Android.mk b/crypto/jb/Android.mk
index dc458fd..0384087 100644
--- a/crypto/jb/Android.mk
+++ b/crypto/jb/Android.mk
@@ -7,7 +7,10 @@
 LOCAL_MODULES_TAGS = optional
 LOCAL_CFLAGS = 
 LOCAL_SRC_FILES = cryptfs.c
-LOCAL_C_INCLUDES += system/extras/ext4_utils external/openssl/include bootable/recovery/crypto/scrypt/lib/crypto
+LOCAL_C_INCLUDES += \
+    system/extras/ext4_utils \
+    external/openssl/include \
+    $(commands_recovery_local_path)/crypto/scrypt/lib/crypto
 LOCAL_SHARED_LIBRARIES += libc liblog libcutils libcrypto libext4_utils
 LOCAL_STATIC_LIBRARIES += libfs_mgrtwrp libscrypttwrp_static liblogwraptwrp libmincrypttwrp