Both these puzzles now have long press mapped to spacebar.

This lets puzzles remember which fonts were loaded previously so
they can be preloaded when the puzzle is started (and the disk is
spinning), instead of while the game is being played.

Sure beats typing on the virtual keyboard.

Add an option to visualize polygon rendering to aid in diagnosing
artifacts.

Up to now, we'd just ignore whatever font size the puzzle asked for,
and instead just go with either the UI font or system font regardless
of their size, which led to some horrible-looking puzzles. This patch
adds the ability to automatically load fonts of the proper size when
they are available, which makes text-based puzzles such as Pattern and
Slant function correctly with any UI font.

The font pack, which should be extracted to the system-wide fonts
directory consists of 3 small bitmap fonts from 7px to 10px and then
anti-aliased Deja Vu fonts from 10px to 36px. It is available in the
source tree (apps/plugins/puzzles/fonts.zip), or from
<http://download.rockbox.org/useful/sgt-fonts.zip>.

Change-Id: I05c8fe7bd6d867e14de9b941deb91e8c642ee4a8

This maps the select button to the "h" key for Fifteen only.

Change-Id: I7a5a61cec46e86254218fabfb191974f98c12319

It used to be that each puzzle had a complete copy of the entire
puzzles manual and the "quick help" text for every single puzzle. This
was obviously a waste, so now each puzzle only has the sections of the
manual that apply to it, saving about 100KB or so per puzzle. This
also has the added benefit of shrinking binary size enough to allow
full help support on the c200v2, which has been enabled.

Change-Id: I76c799635de058e4a48e0c18b79537857af7cf85

DRMODE_FG should be used instead of DRMODE_COMPLEMENT to allow text to
be drawn in color, benefitting puzzles such as Slant and Pattern.

Change-Id: I292216490a58344cb93dc5c2ec1780229735313a