0026165: Visualization, TKOpenGl - fix FBO blitting on some mobile devices

0026165: Visualization, TKOpenGl - fix FBO blitting on some mobile devices

OpenGl_Texture::Init() - initialize FBO textures with GL_TEXTURE_WRAP_ set to GL_CLAMP_TO_EDGE,
since some devices do not support GL_REPEAT (which is default) in such combination.
OpenGl_Font::createTexture() - define texture parameters explicitly.

OpenGl_FrameBuffer::Init() create Depth render buffer object instead of texture
on devices which do not support GL_DEPTH24_STENCIL8.