Experimental win32 OMF linker written in D now on github

[Daniel Murphy]

So a couple of years ago I had too much free time and wrote a linker.

It's now on github: https://github.com/yebblies/ylink

Pros:
- Written in D
- Not written in assembly
- Not written before I was born
- Boost license
- Usually produces working executables

Cons:
- No debug information (yet)
- Slower than optlink
- Uses more memory than optlink (cannot run with < 64k of ram)
- Cannot produce DLLs (yet)
- Not really tested

It still needs a lot of work, but it's functional.

Potential uses:
- Replace optlink
- Replace microsoft linker (we could ship this with dmd)
- Call from dmd to do in-memory linking
- Experiment with linker optimizations

Enjoy!