regex direct support for sse4 intrinsics

[Martin Nowak]

> Both GCC and LLVM back-ends support computed gotos (despite the asm  
> produced by LLVM on them is not as good as GCC one). If people feel the  
> desire to add compiler-specific computed gotos to D, they will risk  
> adding them with a different syntax on each present and future compiler.

What did you had in mind?

The following would only require a minor syntax change.

auto codeaddr = &Label;
goto codeaddr + 0x10;

GotoStatement:
     goto Identifier ;
     goto Expression ; // NEW
     goto default ;
     goto case ;
     goto case Expression ;