Beta quality drop of Objective C Support.

- Add more to the ObjC dir readme.
- Merge the ExtensionField and ExtensionDescriptor to reduce overhead.
- Fix an initialization race.
- Clean up the Xcode schemes.
- Remove the class/enum filter.
- Remove some forced inline that were bloating things without proof of performance wins.
- Rename some internal types to avoid conflicts with the well know types protos.
- Drop the use of ApplyFunctions to the compiler/optimizer can do what it wants.
- Better document some possible future improvements.
- Add missing support for parsing repeated primitive fields in packed or unpacked forms.
- Improve -hash.
- Add *Count for repeated and map<> fields to avoid auto create when checking for them being set.

1 files changed, 2 insertions, 2 deletions

diff --git a/objectivec/GPBRootObject_PackagePrivate.h b/objectivec/GPBRootObject_PackagePrivate.h
index f1cfe990..3c8f09c8 100644
--- a/objectivec/GPBRootObject_PackagePrivate.h
+++ b/objectivec/GPBRootObject_PackagePrivate.h
@@ -32,12 +32,12 @@
 
 #import "GPBRootObject.h"
 
-@class GPBExtensionField;
+@class GPBExtensionDescriptor;
 
 @interface GPBRootObject ()
 
 // Globally register.
-+ (void)globallyRegisterExtension:(GPBExtensionField *)field;
++ (void)globallyRegisterExtension:(GPBExtensionDescriptor *)field;
 
 @end