* demo1 - cmBack instead of cmFront
+ pack_file_ext constant (used in tinyglr and packer both)
+ Log now counts and writes down total count of errors and warnings
* Log.Write is no more inline.
+ Shader uniforms interface implementation (enumeration, method signature)
+ Material functionality - has no implementation for Create from stream and can't attach textures
* Uncommented shader validate. If it fails it writes error, not critical (no program termination)
* Little fixes for shader's log writes
* Bind vertex attribs now happens only if Vertex shader was loaded (instead of all types of shaders)
- deleted commented useless code