[Sisuite-docs] automatic manual building

[dann f. <da...@hp...>]

fyi, i've move the automatic manual generation code to a new machine and updated it
for version 3.2.

Commit triggered builds of the documentation are published here:
  http://www.systemimager.org/doc/html/
  http://www.systemimager.org/doc/systemimager-manual.pdf

With a timestamped build log here:
  http://www.systemimager.org/doc/build.log