Small improvements and getting RTP path with wine.

Now luabot test works.(but only exiting)
Maybe needs some key logging for bug reproducing.
And luabot script should be passed from command line since env variable has many problems.

I added wine registry parser to get path of RTP installed on wine.
Wine stores font paths to registry so we can reuse this in font finder too.
Note that the parser is incomplete compared to [original wine's parser](http://source.winehq.org/git/wine.git/blob?f=server/registry.c) but it worked fine. I'll improve it if needed.
Parser uses Boost.Spirit.Qi but I don't know how much it works on other platform like console game hard.
I'll make it excludable if needed.