libobjc: add missing support for +resolveClassMethod: and +resolveInstanceMethod: to the new API

["Nicola Pero" <nicola dot pero at meta-innovation dot com>]

While looking at testcases for the Apple/NeXT Objective-C runtime I noticed
that while implementing the new "Objective-C 2.0" API in libobjc I had missed
the new +resolveClassMethod: and +resolveInstanceMethod:.

This patch adds support for them.  Full testcases are included.

Committed to trunk.

Thanks

In libobjc/:
2010-12-11  Nicola Pero  <nicola.pero@meta-innovation.com>

        * sendmsg.c (selector_resolveClassMethod): New.
        (selector_resolveInstanceMethod): New.
        (__objc_resolve_class_method): New.
        (__objc_resolve_instance_method): New.
        (get_imp): Call __objc_resolve_class_method or
        __objc_resolve_instance_method at the appropriate time.
        (objc_msg_lookup): Same.
        (class_getClassMethod): Same.
        (class_getInstanceMethod): Same.
        (__objc_init_dispatch_tables): Initialize
        selector_resolveClassMethod and selector_resolveInstanceMethod.
        * objc/runtime.h: Updated documentation of class_getClassMethod,
        class_getInstanceMethod and class_getMethodImplementation.

In gcc/testsuite/:
2010-12-11  Nicola Pero  <nicola.pero@meta-innovation.com>

        * objc.dg/gnu-api-2-resolve-method.m: New.
        * obj-c++.dg/gnu-api-2-resolve-method.mm: New.

Attachment: patch.txt
Description: Text document