Fix dependencies

 * WITH_QML_GLES renamed to WITH_GLES( QWidgets need it too )
 * WITH_ANGLE option added for Windows build
 * Qt with angle requires GLES and D3Dcompiller, if WITH_ANGLE is ON then
WITH_GLES is ON too and can not be disabled
 * libGLESv2.dll and libEGL.dll will be installed if WITH_GLES enabled
 * D3Dcompiller_*.dll will be installed only if WITH_ANGLE enabled

P.S.: tested on Qt5.3.0-mingw-angle and Qt5.2.1-mingw-opengl
[qml] Fix FPS slowdown

When it loads texture line by line FPS becomes less than 20.
I can't find better solution than using old code.

Tested on Windows MinGW x86 Qt5.3.0 Angle( with OpenGL ES 2 ).