(Bugs 5237 and 7979)

- Land Protector now behaves more like on official servers
  * Land Protector now protects from units being placed on it, no matter if they have splash range or not
  * Land Protector no longer protects from damage from units not outside Land Protector that splash inside
  * Meteor Storm no longer shows meteors falling if they would land on Land Protector
  * Pneuma can no longer be placed next to Land Protector
  * Safety wall no longer consumes gem if cast on LP.
  * Also cleaned up the code a bit, so the checks are done where they should be done
- Ground skill splash ranges updated to their official values
  * Lord of Vermilion places units in a 11x11 area with 3x3 splash range each
  * Storm Gust places units in a 9x9 area with 3x3 splash range each
  * Heaven's Drive places units in a 5x5 area with no splash range
  * Venom Dust now has a splash range of 3x3 and is consequently larger than before
- Storm Gust's knock-back behavior updated to official
  * Each of Storm Gust's units will knock back "Away from center"
  * As units in the south-west are processed first, the knock-back direction will usually be north-east
  * At the edges the knock-back direction will be "to the outside"
  * Land Protector and Ganbantein will influence the knock-back behavior strongly, e.g. if Storm Gust has a hole in the middle, it will have a "suck in" effect
  * Added a config option for those who want the old "random direction" behavior from eAthena
Merge pull request #396 from GrumpyLittlePanda/master

Bugs 5237 and 7979, Land Protector / unit splash behavior
* 1st Transcendent Spirit, monster position lag fixes
- 1st Transcendent Spirit will now work as on official servers (#116)
  * The max total stat that is granted by the skill is now BaseLevel-10 with a maximum of 50 instead of always 50
  * It will now work as Marionette Control and calculate the bonus at cast time rather than overwrite all existing bonuses
  * Agi Up and Blessing will now cancel the soul link
- Fixed various problems that caused position lags on the client (#118)
  * Added a define ACTIVEPATHSEARCH in mob.c; if active (default and official), monsters will only grab targets if the walk path to the target is shorter or equal their search range; search range depends on whether the monster is moving or not (range2 for standing monsters and range3 for walking monsters); this requires a lot of CPU load, if it causes trouble, just comment the define for old behavior
  * Fixed a bug that made monsters display "irregular movement with position lag" continuously when a status change ended that changed their walk speed
  * OFFICIAL_WALKPATH now also applies to monsters
  * If the path search fails while a unit is already moving, we will now issue of fixpos packet so that the unit does not only stop moving on the server, but also on the client

* Direction fixes
- Updated the config setting attack_direction_change from 15 to 0 (official value); that means that a unit's direction will no longer change when it attacks; knock-back effects from e.g. Firewall will depend on the last direction the target walked into instead (bugreport:1322)
- Ensured that the default direction of a monster is always "north", so that immobile monsters will now always be knocked back to the south by e.g. Firewall on default settings, unless a skill like e.g. Backstab changes their direction (bugreport:1322)

- Fixed a bug that stopped characters server-sided and caused position lag when closing a skill menu

* Magnum Break damage fixed
- Targets two cells away will now only take 100%+10%*level damage (#108)
Correction, safetywall still consumes sp when cast on LP.
Merge pull request #402 from GrumpyLittlePanda/master

Correction, safetywall still consumes sp when cast on LP.
AIHOHAAAAAAA (!!!!) addressing susus interfacing thing overlook

Signed-off-by: shennetsind <ind@henn.et>
Split functions pc_equipitem and pc_unequipitem.
update HPM hooks.