Merge pull request RaftLib#125 from RaftLib/removegsl

updates to remove gsl, unfortunately the build script overwrites the …will re-add GSL wrappers at some point, but they should be integrated better.

Merge pull request RaftLib#121 from RaftLib/pkg_config_fix

PKG-config and install fix, repairs earlier pkg-config efforts, also recursive changes into all submodules for pkg-config. Got rid of scotch files and others given that functionality hasn't worked in quite awhile. Also, added in qthreads checks and fixed qthreads repo (separately).

Merge pull request RaftLib#82 from avsej/master

Remove traces of Boost dependencies, thanks @avsej!

updates to submodule, adding prefetch benchmark, thinking about remov…

…ing prefetch, not much of a benefit on most platforms

updates

updates

Update README.md

updates

updates

Merge branch 'master' into dev