Fixed issue in *guildskill, lvl could be set to negative values. (issue: 8214) http://hercules.ws/board/tracker/issue-8214-guildskill-lead-to-negative-guild-skill-level/
Fixed issue in [AT](un)jail when jailing players in sec_pri (issue: 8206) http://hercules.ws/board/tracker/issue-8206-jail-bug/
Removed redundants
Removed CMakeLists.txt (Thanks to Haruna)
Removed 3rdparty/cmake and item_db.pl (Suggested by Haruna)