Removed generating new texture repeatedly during character cache.
Copy valid region only from old texture after ReallocTexture().
As a result, reduced stuttering video playback with subtitle.
Use TEXTURE_VOID instead of m_bTextureLoaded
[linux] only query OnLowBattery property query if needed
fixed: show icon for addons installed from zip
Merge pull request #4998 from uNiversaI/kay-zipiconfix

fixed: show icon for addons installed from zip
Merge pull request #4996 from mkortstiege/battery

[linux] only query OnLowBattery property query if needed
Merge pull request #4884 from sportica/opt_ttf_gl

Optimize ttf font atlas for Open GL