video-gliden64: Update to commit 19668e2.

[fzurita]

This one is important to get in because it contains fixes for Adreno devices.

gonetz/GLideN64@19668e2

• 19668e2 Fixes shading issues and flickering textures on Adreno devices: Adreno drivers for GLES3 GPU have issues with glBufferSubData. glBufferData works without issues, so we have to use only glBufferData for Adreno by the cost of reallocating the data store.
• eac8efc Fix 'Shadres' typo in UI and translation files.
• 5ca35ad Merge pull request Rom prototype #735 from purplemarshmallow/12
  |
  | * 3caa176 disable depth buffer emulation by default
  |/
• 6023b34 Fix OGLRender::drawLine, issue cover art missing #733
• 5ac814b Simplify OGLRender::_canDraw().
• b67789a Fix bug in TxFilter::dmptx - osal_mkdirp returns 0 if OK.
• 586af36 Don't wrap fb texture coordinates when clamp is on.
• 05e62b7 Correct readTexMS shader.
• 16136b0 Do not set buffer's height to VI.height if it is zero.
• 3bd24d3 Disable FBO draw when current buffer set to NULL.
• 864eb9f Don't draw anything if frame buffer emulation is on, but current buffer is NULL.
• a365afd Correct buffer height detection in gDPSetColorImage: don't use viewport height in LLE mode, since LLE does not use viewport.
• 1beadcb Add VI parameters correction to RSP_ProcessDList().
• 2488590 Add hack_ZeldaCamera to fix camera in Zelda MM, resident evil 2 (galaxy S6 graphics bug) #577
• 1eaa967 Add hack_skipVIChangeCheck hack for Zelda MM.
• a3f9b43 Disable _copyDepthBuffer() for GLES2 only.
• 27c4ccc Code refactor in _copyDepthBuffer().
• bff1958 Code refactor: CheckForFrameBufferTexture - use fbList variable instead of calls to frameBufferList()
• 874ebce Use fixed alpha flag only for 8bit frame buffers.
• a98aac9 Make frame buffer texture monochrome when it is used as IA texture.
• d506d61 Set vertex alpha for texrect to 1.
• 11317c2 Correct some blend modes.
• 1fb7859 Fix buffer end address calculation in FrameBuffer::reinit.
• 43d387b Fix compilation of GLSLCombiner_gles2.cpp