:fire: Remove compatibility stuff from the core
:fire: Remove backwards compatible RadiusDamage
:fire: Remove backwards compatible CreateMultiForwardEx
:fire: Remove amxmod compat hack from the compiler
:fire: Remove old file check
Update multilingual plugin

- User pcvars
- Remove vault usage
- Remove amx_setlang (not very useful, it's covered by the cvar now)
- Remove server language from the menu (covered by the cvar now)
- Add a cvar for previously hardcoded DISPLAY_MSG
Fix package script copying wrong amxmodx_version file to include folder
Ignore compiled plugins
Replace svn_version with default amxmodx_version which should get replaced by AMBuild regardless
Remove svn_version.inc from package script
Update copyright year
Update core to use amx_language cvar instead of vault
Change zeroes to manual in predefined version.inc
Add extern amxmodx_language
Update VS references to amxmodx_version.inc
splitext didn't work
Don't build mysql module with travis because every time it runs, it downloads full mysql sourcecode
Add --no-mysql to checkout-deps.sh
Use MAX_PLAYERS
Merge pull request #81 from xPaw/messing-with-copyrights

Update copyright year