Fixed issue: 7725
 http://hercules.ws/board/tracker/issue-7725-disguise-hide-skill-bug/
Fixed issue: 8027
 http://hercules.ws/board/tracker/issue-8027-when-the-storage-is-open-you-can-use-self-skills/
Fixed issue where @at showed it failed when it succeeded
Fixed issue: 7936
http://hercules.ws/board/tracker/issue-7936-guildparty-item-bounded/
Fixed issue: 8140
http://hercules.ws/board/tracker/issue-8140-toucan-npc-error-message/
That error usually happens when the player clicked on a NPC that has the view id
of a mob, to activate this kind of npc it's needed to be in a 2,2 range
from it. If the OnTouch area of a npc, coincides with the 2,2 range of
another it's expected that the OnTouch event be put first in stack, because
unit_walktoxy_timer is executed before any other function in this case.
So it's best practice to put an 'end;' before OnTouch events in npcs that
have view ids of mobs to avoid this kind of error.
Also updated script_commands.txt to add this recomendation.
Fixed issue: 7939
http://hercules.ws/board/tracker/issue-7939-change-sex/
Also cleaned a bit the change sex process
Fixed issue: 7694
http://hercules.ws/board/tracker/issue-7694-guild-notice/
Follow up to 7a5f7db
Follow up to 4147d9f
Fixed some compiler/analyzer warnings.

- Sanitized some macros (they weren't going to cause problems, but
  better being safe than sorry)
- Parenthesized an incorrect expression in 6f6a6b3.
- Inverted an if(foo); else bar; statement in 6f6a6b3 to get rid of the
  empty expression (for legibility).
- Commented out some unnecessary lines as suggested by clang's static
  analyzer.

Signed-off-by: Haru <haru@dotalux.com>
Follow up to 6f6a6b3
Fixing small typo in that commit
Merge branch 'master' of http://github.com/HerculesWS/Hercules

82af3838a204e9ec959e1beac12.
Added sanity checks in itemboundretrieve_sub
Fix - Do not allow players to attack while sitting
Merge pull request #274 from vthibault/master

Server side check to prevent player from attacking while sitting.
Merge remote-tracking branch 'upstream/master'