OpenArena Old Versions Mappack addon

OpenArena version 0.8.8 has improved versions of many maps in many senses (improved visuals, gameplay, support for newer gametypes, etc) but not everyone is happy with these changes.

Players might prefer old versions instead of the newer ones for different reasons. Though we're not going backwards, these versions are offered for offline/server play. These versions have their building/playing problems fixed and have also many stuff for proper game support.

Some considerations:
* The maps have different names, so not to clash with the current ones. For example, am_galmevish from 0.8.1, the map name is 081am_galmevish; am_underworks from 0.8.5 is 085am_underworks and so on...
* These versions are considered non-official versions, and as such, aren't officially supported nor are we going to include them in official releases. If anything, we want to move on from the "ugly" visuals which already makes OA gaming's favourite punchbag.

Mappack content:
- 0.7.1 fan
- 0.7.1 hydronex
- 0.7.1 oa_bases5
- 0.7.1 oasago2 (introduced in v2)
- 0.7.7 ctf_compromise (introduced in v2)
- 0.7.7 ctf_inyard
- 0.7.7 oa_minia
- 0.7.7 slimefac
- 0.8.1 am_galmevish
- 0.8.1 ctf_gate1
- 0.8.1 ps37ctf
- 0.8.5 am_underworks
- 0.8.5 am_underworks2
- 0.8.5 oasago2 (introduced in v2)

General changes in all of the maps:
- Location messages added for teamgames.
- Music added.
- Level titles corrected to mirror their OA 0.8.8 counterparts
- Some rebuilding needed because they contained errors.
- New levelshots.
- Intermission points.
- info_player_start changed to info_player_deathmatch. Every info_player_deathmatch has the "initial" flag set to 1.
- CTF-based maps have support for every CTF-based gametype: CTF, 1FCTF, Harv, Over, eCTF, Elim, DD.
- FFA-based maps have support for FFA, LMS, and depending on their size, TDM, Tourney and Elimination.

Map-specific changes:
- oa_bases5 is now editable in newer editors such as GTKRadiant 1.5.0 and NetRadiant 1.6.0.
- am_galmevish had a problem which screwed q3map2 compilation. It's fixed.
- ctf_gate1 works properly in every gametype.
- ctf_inyard's bspc problem solved.
- ctf_inyard's clipping problem solved.
- ctf_inyard's HoM problem solved.
- hydronex is now editable with modern editors such as NetRadiant 1.6.0.
- (v2) oasago2 had its torched replaced with lower poly ones in order to boost performance. Also some lighting tweaks. Properly tagged key objectives for teamgames.

v2 Changelog:
- New versions: 0.7.1 oasago2, 0.7.7 ctf_compromise and 0.8.5 oasago2.
- 0.7.1 fan:
-- Improved bot playing. Bots now won't throw themselves to the pit as often as before.
-- Added more spawnpoints, in order to prevent telefragging.
- 0.7.1 hydronex:
-- Added more spawnpoints (previously only 4 per team, now 10)
-- Clipped ramps.
-- Some minor optimizations.
- 0.7.1 oa_bases5:
-- Added more spawnpoints for team games.
-- Fixed bad texture scaling.
-- Fixed overbright ambient lighting.
- 0.7.1 hydronex, oa_bases5 and oasago2, 0.8.1 ctf_gate1 ps37ctf: Properly tagged key objectives for teamgames.
- 0.7.7 slimefac: Added support for Possession (OA3, available for testing here).

Installation:
- Extract in your OpenArena folder. Your "baseoa" folder should have the following files:
* 071fan-v2.pk3
* 071hydronex-v3.pk3
* 071oa_bases5-v2.pk3
* 071oasago2-v3.pk3
* 077ctf_compromise.pk3
* 077ctf_inyard.pk3
* 077oa_minia.pk3
* 077slimefac-v2.pk3
* 081am_galmevish.pk3
* 081ctf_gate1-v2.pk3
* 081ps37ctf-v2.pk3
* 085am_underworks.pk3
* 085am_underworks2.pk3
* 085oasago2.pk3

Credits:
- Luciano "Neon_Knight" Balducchi - map porting and fixing, am_galmevish, am_underworks, am_underworks2
- "leileilol"/"fromhell" - oa_bases5, fan, hydronex port
- "cosmo" - ctf_gate1, ctf_inyard, slimefac
- Maik "SavageX" Merten - hydronex
- "kit89" - oa_minia
- "PsYthe" - ps37ctf