#373 Class/race cleanup: fenx, mage, alchemist

[Rebecca Kelly]

These patches fix some minor issues:
- fenx incorrectly had some abilities from elf
- mage is an exact duplicate of warlock
- alchemist was given a sorcery talisman and was thus unable to cast alchemy, a summoning spell

They can be applied in any order but the changelog diffs assume they will be applied in the order given by their filenames; if applied in a different order you may need to do some conflict resolution on the changelog.

[Nicolas Weeger]

Patches applied as revision 21394, many thanks :)