Upload binaries to the bitbucket "downloads" page

[bestchai]

Upload stand-alone linux and an osx texada and texadatest binaries to the 'downloads' tab in bitbucket. Label these binaries with arch/platform info, as well as changeset id.

This will make it easier for users to try out texada (without needing to install the necessary libraries and build from source).

[Issue created by bestchai: 2014-09-04]
[Last updated on bitbucket: 2015-08-20]

[Comment created by bestchai: 2015-08-20]
The binaries have to be statically linked with spot/boost and other libraries so that the download is complete on its own and can be used without installing any dependencies.