Update slang_version.h for KitKat and add new version number tests.

Change-Id: Ifd8bb0c6d48b280c80cf84dc4b1edcd1d95028b2
diff --git a/slang_version.h b/slang_version.h
index 3da104b..287dc3e 100644
--- a/slang_version.h
+++ b/slang_version.h
@@ -32,6 +32,7 @@
   SLANG_JB_TARGET_API = 16,
   SLANG_JB_MR1_TARGET_API = 17,
   SLANG_JB_MR2_TARGET_API = 18,
+  SLANG_KK_TARGET_API = 19,
   SLANG_MAXIMUM_TARGET_API = RS_VERSION
 };
 // Note that RS_VERSION is defined at build time (see Android.mk for details).
@@ -46,8 +47,8 @@
   JB = 1600,
   JB_MR1 = 1700,
   JB_MR2 = 1800,
-  KLP = 1900,
-  CURRENT = KLP
+  KK = 1900,
+  CURRENT = KK
 };
 }  // namespace SlangVersion