Update rust, ~str to StrBuf, std lib changes
Merge pull request #114 from gmorenz/update_rust

Update rust, ~str to StrBuf, std lib changes
Merge branch 'master' of https://github.com/dpx-infinity/rust-sdl2 into dpx-infinity-master

Conflicts:
	src/sdl2/render.rs
Updated to match latest changes to strings
Merge pull request #115 from AngryLawyer/strbuf-to-string

Updated to match latest changes to strings
Added SdlResult and switched to StrBuf
Migrated everything to SdlResult
Fixed incorrectly merged files
Switched from to_strbuf to into_owned