Fixed issue with Alt-Tab from fullscreen and fullscreen event wrong behavior.
Fixed minor main window and console window behavior issues.

Now engine will pause when user is moving or syzing it's window.
Now console commands input area accepts not only lower-case characters.
Now console window repaints correctly when shown in fullscreen mode.
Fixed minor bug when "&" and "(" characters couldn't been used in
console.
All "process" variables and methods in Core renamed to "Update".
Minor log output improvments of render and sound subsystems.
Micro syntax change.