Wavefront normal map support.
Wavefront bump/normal map detection.
Forgotten file.
Obj parsing refactoring.

Removed duplicated code in bump and normal map parsing.
Merge pull request #6 from zqsd/master

Normal mapping
Fix issue in osgjs plugin if not using useExternalBinarayArray
Plugin Valve
Vtf support to resolve plugin.
Vtf detection fixes.

Add another vtf detection path
Don't discard anymore textures declared with extension .vtf
Removed valve plugin

Texture convertion is now done by hllib
Removed valve plugin from cmakelist

Forgot that commit
Merge pull request #7 from BrianGiannini/master

vtf support on OSG
[#59128380] if defaut texcoord target for tangent base building is empty, find the first texcoord slot existing
fix tabs to space
Merge branch 'hotfix/osgjs_tangent_texcoordfinder' into develop