Moria changes, stage 2.

Signed-off-by: nppangband <nppangbanddev@verizon.net>
Merge pull request #17 from nppangband/work_in_progress

Moria changes, stage 2.
Merge pull request #18 from levind/work_in_progress

Moria stage 2
Merge pull request #20 from levind/bugfix

Moria stage 2