Add dev/ folder to cmake
Bugfix: explicit type cast needed to compile for ARM

The templated qMin and qMax functions used in qluabrowser.cpp need to
have the same argument number type. When compiling under ARM the left
argument number is a "qreal" and right a "double". This mismatch
generates a error.
Changed path to packages.th7: using raw url on github.
Removing --use_fast_math (CUDA).

It doesn't seem to change much in terms of performance, and
is potentially causing lots of subtle precision problems.
Merge pull request #135 from bmartini/master

Bugfix for ARM compiling
Merge pull request #133 from jucor/AddDevFolder

Add dev/ folder to cmake