#20 Replace boost::mutex with TinyThread++

[Marcus Geelnard]

I added TinyThread++ in the contrib dir, and basically replaced boost::mutex with tthread::mutex.

With this patch, there should no longer be a need for Boost. Even in the Boost workaround build, assimp can be made thread safe.

The patch was made against SVN revision 824.

[Marcus Geelnard]

Patch file (vs revision 824).

[Alexander Gessler]

Closing this issue. We're working to get rid of all mutexes in assimp, so there is no need for this.

Bye, Alex