Android port/GL4ES shader compilation failures fix

Abdu Sharifrequested to merge
(removed):android_gl4es_shader_fix into master

This fixes those error:

[W] VERTEX glCompileShader "2 compatibility/shadowcasting.vert" FAILED
[W] VERTEX Shader "2 compatibility/shadowcasting.vert" infolog:
[W] 0:30: S0052: Uniform or storage buffer variable 'useDiffuseMapForShadowAlpha' with initializer
[W] glLinkProgram 0x702d10ce00"" FAILED
[W] Program "" infolog:
[W] Link failed because of invalid vertex shader.
[W] VERTEX glCompileShader "13 compatibility/fullscreen_tri.vert" FAILED 
[W] VERTEX Shader "13 compatibility/fullscreen_tri.vert" infolog: 
[W] 0:9: S0052: Uniform or storage buffer variable 'scaling' with initializer 
[W] glLinkProgram 0x701907a900"" FAILED 
[W] Program "" infolog: 
[W] Link failed because of invalid vertex shader.

And white in-game screen:

white_ingame_screen

Edited by Abdu Sharif

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