Get it here: http://te4.org/games/addons/tome/orcsallraces or on the Steam workshop.
You will still need to have the race unlocked to use it with this add on.
Enjoy!
----
Changelog:
v1.3.0
---
New implementation which should be compatible with any race, so long as that race is allowed in The Arena.
This version directly modifies the allowed races in Orcs and adds a before_starting_zone function which will adjust the faction, starting quest, intro text, and starting zone for any race not normally available in Orcs.
v.1.2.5
---
Added Runic Golem (requires Zizzo's Ignore Race/Class Locks addon)
v1.2.4
---
Added Vor'tep and Sholtar.
v1.2.3
---
Added Drem and Krog.
v1.2.2 aka I forgot whether I had already changed the version number, so I went up by two, apparently.
---
Bugs:
Fixed Bulkling (the definition was not complete

Compatability:
Added Xorn, Troll, Abomination, and Dreamelf, from their respective addons, and Forsaken, Manawraith, Chronophage, Ancient, Hellforged and Plaguetouched (whew...) Vampire Subraces from astralInferno's Inferno Race Pack.
Increased weight to 200000, for Dreamelf compatibility... yeah.
v1.2.0
Stone Warden compatible, once more.
v1.1.0
Now fully compatible with all campaigns! ('Kruk' races will no longer overwrite standard races when NOT playing the Orcs campaign with this add on enabled.)
Added support for Midnight races (Mardrop and Star Elf)
Added support for new Inferno Race Pack races (as of version 1.1.8 )
v1.0.7
Players will no longer start with extra inscriptions.
Kruk Dwarves can now be Stone Wardens (if available).
Subraces are now broken up into their usual races instead of being grouped together under 'Prideful'.
v1.0.6
Fixed an error that caused Undead players to start on level 3 of the Vaporous Emporium and made the Atmos Tribe friendly to them.
v1.0.5
Removed escort possibility from all races.
v.1.0.4
Corrected error from 1.0.2
v1.0.3
Temporary partial revert due to error in 1.0.2
v1.0.2
Cleaner code.
Added support for astralInferno's Inferno Race Pack (or any of the races therein, if you are using them individually).
v1.0.1
Fixed type and subtype not being set for a few races.
v1.0.0
Release.