Package variadic

This packge implements variadic calling conventions for calling foreign C code from within Go.

The primary motivation for this package was to be able to interface with Apple's Objective-C runtime on Mac OS X, which uses a variadic function (objc_msgSend) for sending messages to objects.

Status

amd64: Works pretty well - http://github.com/mkrautz/objc uses it (only tested on darwin, though!)

386: Works on linux/386 and darwin/386

    Note: darwin/386 requires 16 byte stack alignment, and no
    effort has been made to support this at the moment. However,
    the tests pass on darwin/386 - not sure if I've been lucky.