WinDev/Lib: Update 'GrColors'.
WinDev/Lib: Update 'GrFonts'.
WinDev/Lib: Update 'GrPixel'.
WinDev/Lib: Update 'GrConfig'.
WinDev/Lib: Update 'GrScr'.
WinDev/Lib: Update 'GrTiles'.
WinDev/Lib: Update 'SYSTEM.h' to support graphic applications.
WinDev/Lib: Update build sripts.
WinDev/Lib: Rebuild 'WinDev.a'.
Update '.gitignore'.
WinDev: Update samples.
WinDev: Add sample 'GrHello'.