Switched tutorial Delfador to elvish clothing
fix lua stacktraces
make lua require use our filesystem functions

previously only lua dofile did this.
add build_mingw*.sh to .gitignore

It's convenient for me to do this, because I use scripts to keep
all the configuration info set up correctly, and I have a few diff
versions of mingw and of boost floating around...
fixup up gui1 button code interactions with filesystem

Image path modifiers should not be present when using the
filesystem::exists function. This fixes a bunch of error messages.
updated Slovak translation
Update filesystem_common.cpp
fixup headers in strftime.hpp, (missing <string>)
Updated big button graphics by LordBob

From <http://r.wesnoth.org/p577072>.

Fixes a weird light source angle issue with the active variants.
dont always show mpconnect in debugmode in sp
remove unneeded check

io_type != IO_CLIENT implies io_type == SERVER
reorder gettext.hpp

We want to put all dependencies of linintl.h to getttext.cpp so we can easily replace gettext/libintl with boost locale gettext by replacing that file.
make gettext.hpp return std::string.

in 99% of cases the returned value was moved into a std::string anyway. We do this becasue the boost gettext functions also return std::string so it makes replacing them easier.
use boost locale gettext

This includuces an alternative implementation of gettext.cpp. Libintl gettext doesn't seem to support utf8 filenames on windows. Also it causes problems when changign the language on my msvc build. That why i want to use boost locale gettext at least for our windows builds.
This requires boost locale which is introduced in boost 1.48 (That's why i still hesitate to make it the default on all systems).
fix unused warnings.
fix compilation

it seems like sometimes libintl.h is needed for LC_MESSAGES so we need
to move that last code that uses LV_MESSAGES out of language.cpp into
gettext.cpp
fix comilation

move LC_MESSAGES out of wesnoth.cpp and game_config_manager.cpp
gracefully catch exceptions generated by changing the language
Merge branch 'master' of https://github.com/wesnoth/wesnoth
fix gettext_boost.cpp