Fixed SendAddonMessage issue.

This fixes GM's not being able to send/receive addon messages through the whisper channel while accepting whispers are turned off.
Core/Spells: Replace MovePosition by MovePositionToFirstCollision in spell dest target handling.

- Solves issues such as being able to summon creatures inside terrain/gameobjects, being able to fall through terrain by using Shadowstep/Feral Charge (Cat), and much more
Core/Spells: Fix fishing on areas with liquid data but no valid height
Merge pull request #12050 from Trisjdc/u_liek_fish_questionmark

Core/Spells: Fix fishing on areas with liquid data but no valid height
DB/Creature: Fix Argent Tournament Vendors

By dr-j, closes #10351
Move file 2014_05_12_00_world_misc.sql
DB/Creature: Fix Antipersonnel Cannon (1) immune mask

Closes #11944, by gecko32
Core/Misc: Fix static analysis issues

Fix uninitialized values spotted by coverity.
Remove unused "dynamic analysis" code, use Valgrind or another dynamic analysis tool instead if needed.
Core/Arena: Fix exploit in arena team

Fix exploit that allowed anyone to add a target Player to any arena team.
DB/Conditions: Fix startup error added on 018da66
Scripts/SWP: Sathrovarr will no longer cause player teleports on grid load
Merge pull request #12058 from Trisjdc/sunwell

Scripts/SWP: Sathrovarr will no longer cause player teleports on grid load
Merge pull request #12021 from Trisjdc/spell_target_dest

Core/Spells: Replace MovePosition by MovePositionToFirstCollision in spell dest target handling.
Core/Misc: Fix crash in ticket creation

Fix a crash happening with malicious CMSG_GMTICKET_CREATE packets.
Core/SAI: Prevent nullifying damage, because of player damage requirements
Fix various warnings. The core, the scripts and the tools now compile without warnings with -Wall -Wextra -pedantic.

-Fix warnings from -Woverflow on implicit constant conversion.
-Fix warnings from -pedantic.
-Fix warnings from -pedantic.
-Fix warnings from -Wformat.

Two minor changes in addition :

-Replace a defined value equal to 2^31 - 1 by std::numeric_limits<int>::max().
-Remove useless null-check on pointer returned by new. New doesn't returns nullptr on failure, it throws std::bad_alloc.
Remove changes in dep file.
Core/SAI: Clear UNIT_STATE_EVADE immediately if we're about to follow a target on EnterEvadeMode (MoveFollow does not clear evade)
Contrib: Added an updated version of the configuration file merger tool.

This one lets you choose which value to keep between the two configuration files.
Make sure to carefully read the file's lines 3 to 9 to make sure you don't misuse it and get back at me later raging.
It is not exactly as I would like it to be, but current state will have to do.

You can try it out live at: http://tinyurl.com/kzxmrlm
Core/GameObjects: fixed instant reset of gameobjects after activation