GLMixer Code

Prevent closing GLSL editor on syntax error

Slight change of behavior for power-of-two video file option; smart scaling now also performs rescaling of texture to be lower than rendering manager max resolution; this makes sense as this option is to optimize texture speed for low-end graphics.

BugFix in session switcher & its GUI.

Improved GUI appearance of Mixing Toolbox under OSX.

Set icon to 16x16

Deselect session in switcher on new session.

Fixed GUI appearance for OSX

Added details for OSX compilation

Complement information for OSX system; recognize .glm files associated to GLMixer

Fixed horizontal mirror.