Crash happened only in some cases like a string starting at the
	half of the screen of same length.

	truncate.
	(grub_fixed_fsf_divide): Likewise.

       get_minimal_size changes.

       bilinear interpolation function.

        terminal-left: terminal window's left position
        terminal-top: terminal window's top position
        terminal-width: terminal window's width
        terminal-height: terminal window's height
        * grub-core/gfxmenu/theme-loader.c: Likewise.
        * include/grub/gfxmenu_view.h: Likewise.
        * po/exlude.pot: Likewise.
        * grub-core/gfxmenu/view.c: Likewise.
        Also updated minimal window size.
        Also terminal_sanity_check function has been introduced.

	position).

	than crashing.

and add it as source to functional_test module.