Particle system improvements.

- Added a new function in client3d.c, GetPointCeiling, which returns the
height of the sector for the given x and y values.
- Increased the MAX_ITEMS value in drawbsp.c from 1200L to 2400L, was
reaching that limit.
- New variables for particle emitters - bRandomize (used for x, y, z
randomizing) now split into bRandomizeXY (map position) and bRandomizeZ
(height); bGroundDestroy for particles that can be removed once they hit
the floor and bWeatherEffect for weather effects such as snow.
- Weather effects now have randomized z velocities between 0.5 and 1.5
of the emitter's velocity.
- Snow and rain particles are destroyed when they hit the ground.
- Weather effects have a default height that should be relatively near
the ceiling for a lot of screens, but low enough that there isn't much
delay in drawing them on entry (snow anyway). Half of weather effect
particles are given a starting point of the ceiling itself. Since
ceiling heights are all over the place, drawing them all from the
ceiling (ideal scenario) would cause issues on screens with very large
heights.
- Added slightly more snow particle emitters. With the above changes it
runs much faster than before, even with 33% more emitters.
Added code to automatically manage placement of qormas gifts
Reset Qormas on RecreateAll
Admin function to add a user to each account.

Done by running the command 'create useroneachaccount'. Will add one
user object to each account using the ForEachAccount function.
Code to favor gifts on the island or mainland according to user's logon
location
Room graphical fixes/improvements.

-Added new archway textures without graphical errors (grd02703.bgf,
grd02704.bgf).
-Fixed archway in NBQ, fixed sidedef errors around arch.
-Fixed archway in SBQ and sidedef errors around arch.
-Fixed missing line on Ivory Chapel in Cor Noth.
-Fixed archway at MG CN (g4.roo).
-Fixed archway in East Ende/Outskirts (i6.roo); took wreath ID tag off
Konima's guildhall entrance.
-Fix graphical error near entrance to CN from King's Way (g5.roo).
-Fix archways in Den of Shadows.
-Show snow through windows in Abandoned Warehouse guild hall.
-Fix sidedefs with incorrectly tagged IDs for snow in FoF guild hall.
-Added snow/ice in Hall of Slaughtered Command.
-Added snow to outside section of Barking Monster tavern.
-Added tags to the water sector and sidedefs in Fields to change texture
appropriately.
-Tagged water outside BQ adv hall window for ice.
-Fix missing sidedef in Dungeon of Castle Brax (lichmaze.roo).
-Fixed snow/ice in meeting place of the Gods.
-Raised ceiling height in Marion and Tos.
Add ground snow to Tos Arena.
Increment client minor version
Merge branch 'dx9tuning' of https://github.com/cyberjunk/Meridian59 into build.1.0.546-req.787-br.dx9tuning-auth.cyberjunk
Merge branch 'adduserstoaccounts' of https://github.com/skittles1/Meridian59_103 into build.1.0.546-req.786-br.adduserstoaccounts-auth.skittles1
Merge branch 'snowimprovements' of https://github.com/skittles1/Meridian59_103 into build.1.0.546-req.785-br.snowimprovements-auth.skittles1
Merge branch 'more_more_qormas' of https://github.com/treymd/Meridian59_103 into build.1.0.546-req.783-br.more_more_qormas-auth.treymd