Bug Fixes
* Fixed Overbrand swing damage ground placement. (bugreport:8856)
* Fixed Wug Dash not getting ATK bonus from Tooth of Wug.
* Cleaned up Gates of Hell damage formula.
* Corrected Hell Gate skill define to be passive.
* Added missing immobilization duration reduction for Poem of Netherworld and blocked it from working on MVP. (bugreport:8877)
* Cleaned up NPC_RUN to show e_hlp and not get stuck in a follow state. (bugreport:8875)
* Fixed item bonus DefRatioAtkEle/DefRatioAtkRaceDefRatioAtkClass not working for left handed weapons. (bugreport:8495, bugreport:8808, bugreport:8847)
* Fixed SubSize/SubRace/SubClass stacking to create 100+% immunity. Thanks to @cydh. (bugreport:8827, bugreport:8879)
* Small cleanup to clif_parse_StatusUp.
* Fixed Sling Item to copy the source skill ID and not the dummy ID.
* Fixed spirit spheres not giving ATK bonus. (bugreport:8130, bugreport:8285, bugreport:8686)
* Acid Demonstration is now forced to neutral in renewal.
* Follow up to e2d2494 to fix cooldown for Unlimit.
* Follow up to e2d2494 to clean up some compile warnings.
* Follow up to da0da73 to fix SC_ITEMSCRIPT to only use an icon if val2 is not empty.
Updated clif_message enum and appropriate clif_msg* functions.
Fixed some issues from the CppCheck report.
Bug Fixes
* Fixed Gentle Touch - Energy Gain not gaining spheres. (bugreport:8882)
* Adjusted Full Throttle's cooldown to be 30 minutes. (bugreport:8887)
* Warmth of the Sun/Moon/Stars are now placeable on Land Protector. (bugreport:175)
* Fixed Mechanic's Axe Mastery to give (4 * skill level) ATK bonus for Mace weapons.
* Cleaned up Cart Boost and Camouflage bonus damage.
* Fixed Envenom pre-renewal bonus damage missing. (bugreport:7953)
* Fixed Eska not reducing movement speed. (bugreport:2792)
* Fixed Marsh of Abyss reducing movement speed below 50%. (bugreport:7424)
Merge branch 'rathena/master'