-Follow up to r17244 : Fixes warning 'check operator precedence' - bugreport:7508
Ignition Break now adds damage when weapon is fire element - bugreport:7433
Comet no longer affects targets on Land Protector - bugreport:7401
Spiral Pierce hitlocking now functions correctly (Thanks Playtester) - bugreport:4127

git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@17247 54d463be-8e91-2dee-dedb-b68131a5f0ec
-add enum for return value of pc_additem
-revert r17142 sd.guild assignment

git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@17248 54d463be-8e91-2dee-dedb-b68131a5f0ec