fix #25
* remove LTCG linker flag for win
* fix shader compile warning error ("No errors." is returned on some GPUs)
* fix vao implementation, initialize once, reduce draw buffer bindings
* reduce program use calls
* reduce further bindings
Merge pull request #26 from cgcostume/vao_initialization_25

fix #25
ref #27
* add autotimer
* add example timer for painter initialization
* use more const begins/ends for iterators
ref #27
* fix autotimer output
ref #27
* reenable whole program optimization for win
ref #27
* add GL compile flag for Whole Program Optimization
ref #27
remove include
ref #27
* add explicit ctor
ref #27
* replace micro sign with u to avoid encoding issues
* fix gcc warning concerning long double and %f
Merge pull request #28 from cgcostume/autotimer_27

Autotimer 27
fix #29
ref #29
* fix mac compile issue (include cmath)
Merge pull request #30 from cgcostume/fix_program_use_29

Fix program use 29
Merge branch 'master' of https://github.com/cgcostume/cgsee into navigation_1_4