Port of Simon Tatham's Puzzle Collection

Original revision: 5123b1bf68777ffa86e651f178046b26a87cf2d9

MIT Licensed. Some games still crash and others are unplayable due to
issues with controls. Still need a "real" polygon filling algorithm.

Currently builds one plugin per puzzle (about 40 in total, around 100K
each on ARM), but can easily be made to build a single monolithic
overlay (800K or so on ARM).

The following games are at least partially broken for various reasons,
and have been disabled on this commit:

Cube:     failed assertion with "Icosahedron" setting
Keen:     input issues
Mines:    weird stuff happens on target
Palisade: input issues
Solo:     input issues, occasional crash on target
Towers:   input issues
Undead:   input issues
Unequal:  input and drawing issues (concave polys)
Untangle: input issues

Features left to do:
 - In-game help system
 - Figure out the weird bugs

Change-Id: I7c69b6860ab115f973c8d76799502e9bb3d52368

apps/plugins/CATEGORIES

@@ -78,6 +78,7 @@ gif,viewers
 pong,games
 ppm,viewers
 properties,viewers
+puzzles,games
 random_folder_advance_config,apps
 remote_control,apps
 resistor,apps
@@ -92,6 +93,45 @@ rockpaint,apps
 search,viewers
 searchengine,viewers
 settings_dumper,apps
+sgt-blackbox,games
+sgt-bridges,games
+sgt-cube,games
+sgt-dominosa,games
+sgt-fifteen,games
+sgt-filling,games
+sgt-flip,games
+sgt-flood,games
+sgt-galaxies,games
+sgt-guess,games
+sgt-inertia,games
+sgt-keen,games
+sgt-lightup,games
+sgt-loopy,games
+sgt-magnets,games
+sgt-map,games
+sgt-mines,games
+sgt-net,games
+sgt-netslide,games
+sgt-palisade,games
+sgt-pattern,games
+sgt-pearl,games
+sgt-pegs,games
+sgt-range,games
+sgt-rect,games
+sgt-samegame,games
+sgt-signpost,games
+sgt-singles,games
+sgt-sixteen,games
+sgt-slant,games
+sgt-solo,games
+sgt-tents,games
+sgt-towers,games
+sgt-tracks,games
+sgt-twiddle,games
+sgt-undead,games
+sgt-unequal,games
+sgt-unruly,games
+sgt-untangle,games
 shopper,viewers
 shortcuts_append,viewers
 shortcuts_view,viewers