Many markup changes (to \regexp, mostly)
Fix unclear wording pointed out by Tim Peters, ...
Changed URL to crypto page.
Added a section to the chapter on modules, desc...
Added libthreading.tex ; this is mostly the con...
Clarify wording in the description of re.split
Added an example that uses signal.alarm() to ti...
The .subn() method wasn't setting _num_regs, wh...