puzzles: refactor and resync with upstream

This brings puzzles up-to-date with upstream revision
2d333750272c3967cfd5cd3677572cddeaad5932, though certain changes made
by me, including cursor-only Untangle and some compilation fixes
remain. Upstream code has been moved to its separate subdirectory and
future syncs can be done by simply copying over the new sources.

Change-Id: Ia6506ca5f78c3627165ea6791d38db414ace0804

1 files changed, 47 insertions, 0 deletions

diff --git a/apps/plugins/puzzles/src/icons/netslide.sav b/apps/plugins/puzzles/src/icons/netslide.sav
new file mode 100644
index 0000000000..f37178ee0c
--- /dev/null
+++ b/apps/plugins/puzzles/src/icons/netslide.sav
@@ -0,0 +1,47 @@
+SAVEFILE:41:Simon Tatham's Portable Puzzle Collection
+VERSION :1:1
+GAME    :8:Netslide
+PARAMS  :3:4x4
+CPARAMS :3:4x4
+SEED    :15:344208514520242
+DESC    :16:49b59aca247714b4
+AUXINFO :34:60d28a22f68cdb6078d67a4d6069b9ff54
+NSTATES :2:38
+STATEPOS:2:31
+MOVE    :4:R0,1
+MOVE    :4:C1,1
+MOVE    :4:R1,1
+MOVE    :4:R1,1
+MOVE    :4:C3,1
+MOVE    :4:C1,1
+MOVE    :4:R1,1
+MOVE    :4:R1,1
+MOVE    :4:R3,1
+MOVE    :4:R0,1
+MOVE    :4:C1,1
+MOVE    :5:R3,-1
+MOVE    :5:R0,-1
+MOVE    :4:R0,1
+MOVE    :4:R0,1
+MOVE    :4:C0,1
+MOVE    :5:R0,-1
+MOVE    :5:R0,-1
+MOVE    :5:C1,-1
+MOVE    :4:R1,1
+MOVE    :4:C1,1
+MOVE    :5:R1,-1
+MOVE    :5:C0,-1
+MOVE    :5:C0,-1
+MOVE    :4:R3,1
+MOVE    :4:C0,1
+MOVE    :4:C0,1
+MOVE    :5:R3,-1
+MOVE    :4:C0,1
+MOVE    :5:R3,-1
+MOVE    :5:C1,-1
+MOVE    :4:R0,1
+MOVE    :4:C0,1
+MOVE    :5:R0,-1
+MOVE    :5:C0,-1
+MOVE    :4:C1,1
+MOVE    :4:R3,1