applied patch from Youri Golovanov fixing bug #316338 and adding a couple

* xmlregexp.c: applied patch from Youri Golovanov fixing bug
  #316338 and adding a couple of optimizations in the regexp
  compilation engine.
* test/regexp/bug316338 result/regexp/bug316338: added regression
  tests based on the examples provided in the bug report.
Daniel
4 files changed