Update libsass to partial source_map support and first pass at newsyntax style
Use array_merge to get around libsass issues with multi key nested maps
Generate relative path for building urls, update example to reflect
First test around new syntax
Update parser tests for new syntax
image-url relative path creation
Reorg for sprite files, tons of code removal :(

* Fixed issue in image-url sass
* Moved preamble after replacement
Put funny names when files cant be generates or are empty
Parse and Sprite tests passing
All tests finally passing under new syntax
Try to install gcc-4.8 on wercker
Comment useful but unused code
Remove quotes from filenames
add test of not translating image-url
Update make for new home location
Errors for test
Remove useless test files and tests
Make error parsing more Go like
Use errorString unexported
Make empty c strings return nil error