Update compiler version to 1600 for JB.

Change-Id: I216d7d2e26be9c52ea764fb59888c7047a0cbbd8
diff --git a/slang_version.h b/slang_version.h
index ef390ea..07bd337 100644
--- a/slang_version.h
+++ b/slang_version.h
@@ -41,7 +41,8 @@
 enum {
   LEGACY = 0,
   ICS = 1400,
-  CURRENT = ICS
+  JB = 1600,
+  CURRENT = JB
 };
 }  // namespace SlangVersion