[merge request] Theme crash prevention.

[Teika Kazura <teika lavabit com>]

Hi. Please merge my branch with

* Theme crash prevention. I found it's a regression since 1.7.0.
  There're some other crash cause I don't know, and e.g. some options in 
  mxflat make Sawfish crash.
  smaker can be used again, but since no one has complained, probably
  no one likes it any more.
* Minor doc & obsolete theme file deletion.

Regards,
Teika (Teika kazura)