Update AST reader/writer to handle new AppleKext.
Fix an unexpected hickup caused by exceeding size of
generated table (and a misleading comment). Improve
on help message for -fapple-kext.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123003 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Driver/CC1Options.td b/include/clang/Driver/CC1Options.td
index 955ca72..58353f1 100644
--- a/include/clang/Driver/CC1Options.td
+++ b/include/clang/Driver/CC1Options.td
@@ -462,7 +462,7 @@
 def fobjc_gc_only : Flag<"-fobjc-gc-only">,
   HelpText<"Use GC exclusively for Objective-C related memory management">;
 def fapple_kext : Flag<"-fapple-kext">,
-  HelpText<"Use apple's kext abi">;
+  HelpText<"Use Apple's kernel extensions ABI">;
 def fobjc_dispatch_method_EQ : Joined<"-fobjc-dispatch-method=">,
   HelpText<"Objective-C dispatch method to use">;
 def fobjc_default_synthesize_properties : Flag<"-fobjc-default-synthesize-properties">,