16-bit to 32-bit colors
Revert "16-bit to 32-bit colors"

This reverts commit 2712fe8fc0858158b30661b24257bb0cd4837717.
Main reason: The game ran slower with 32-bit colors.
Also, the panel colors in the editor/game were a little off.
hint system created

Hints are different from tutorials, they are shown sequentially.
Editor cannot edit hints, but leaves them in the file properly.
No in-game hotkeys are used for hints. Zoom not available in hint levels.
Documentation updated with full info on the hints/tutorial format.
menu background by Mikex62
hints linebreak automatically

Hints linebreak both at <br> and when the edge of the screen has been reached.
deleted Rubix' Reloaded set from the main release
fix build with libpng-1.5 and newer

patch from "laloch <lalochcz@gmail.com>"
allow verbose build
respect compiler and system flags

libtool was missing "--tag" switch and the "-s" siwtch in CXXFLAGS
is redundant since we already call strip on the binary
remove insecure runpath
use pkg-config if present, use allegro cflags
fix build with strict compilers such as clang
bugfix: team game desync, replay data order

There was a problem when pl0 and pl2 from the same team assigned a skill in
the same tick to the same lix; that was is the other way around in the other
replay.

Alright, next test is inverting just these two lines and see whether the
replays do the same -> yep, that seems to be the only change in gameplay.

Okay, the fix seems obvious, the ordering must be made stricter, not merely by
tick. Not sure why I didn't think of this before. It's probably from the
pre-team game times, where orders within the same tick didn't matter as long
as each player's actions in that tick were ordered correctly.
Merge remote branch 'hasufell/master'
version number to 2013-01-16
editor bar displays keys to move around
only a comment in lookupmap
log.txt has runtime date, less includes of log.h
bugfix: ascender in midair, version to 2014-03-21

In the tumbler code, there was a default value of 0 for "no floor here",
but that could have been a floor at a certain pixel as well. Default value
is now -999, which is different from every checked height. Bug before:
Climbable jumper hit top of a block, then ascended way above the block.
bugfix: basher -> faller no free distance