Makefile: Relink aura with the GMP library.
While doing testing on Ubuntu 12.04 x64 and Arch x64, ldd returns that aura indeed does still link with the GMP library so add -lgmp to the aura Makefile as reported in issue #18.
StormLib: Don't dynamically link to zlib and bz2 but rather use the source already supplied.
Build StormLib using statically linked zlib and bz2 found already in the repository. This should aid in resolving issue #18.
fileutil: fix a resource leak where closedir wasn't called on Linux and CloseFind wasn't called on Windows (Coverity)
fileutil: fix a typo caused by commit 13a44eb268
bnet: fix a typo in some BNET messages
gameprotocol: fix a shameful typo
game: add !d alias to !drop command
game: implement the !unhold command
game: allow !compteam to give computer slots up to 13
The usecase for this is being able to put computers into observers.
bnet: add command !getobservers (alias !go) which lists observers in lobby or running games
This also means that !gameplayers now returns only true players.
map: melee maps now have obs enabled by default
util: kill all ToString(X) functions and use the standard C++11 way by using to_string(X)
Since to_string() doesn't accept something like a width or number of digits parameter, commands like !statsdota et cetera return much longer responses as well as loading times.
util: kill all To(U)IntXX functions and use the standard C++11 way
Merge branch 'master' of https://github.com/Josko/aura-bot
stormlib: remove an assert causing troubles
Apparently many maps have invalid attributes (probably from protection) and this assert would crash aura when loading some maps:

'''
aura++: /home/josko/projects/aura-bot/StormLib/src/SFileAttributes.cpp:129: DWORD CheckSizeOfAttributesFile(DWORD, DWORD, DWORD): Assertion `false' failed.
Aborted (core dumped)
'''

For now the easiest way is to remove the assert which solves the problem.
readme: added a few notes for Linux
bnet: catch stoul exceptions
game: catch stoul exceptions
aura: don't sync with cstdio as we don't use it anyway and it nets a nice performance increase
bnet: remove an extra comment