TESTS: Moved gtests to a separate tests directory
UMVE: support loading tabs from plugins
Merge pull request #80 from Waldteufel/umve-plugins

UMVE: support loading tabs from plugins
TESTS: Added pthread flag to compiler options
MATH: Added value iterators to math::Matrix
Makefile: Enabled position independent code: -fPIC
MATH: Added value iterators for math::Vector
APPS: Fixed a makescene bug with missing images in NVM files
APPS: Changed mveshell behavior when exporting float images
Merge remote-tracking branch 'upstream/master'