Immprove performance by caching regular expression execution.
Immprove performance by caching regular expression execution.


git-svn-id: a7bacd0dc31be1a0cf5811f301b7447f6e26ceee@17 ee662328-c844-0410-bbb0-bb2280efe8f3

misja/esmre,wharris/esmre,b-long/esmre,wharris/libesm,misja/esmre,wharris/libesm,b-long/esmre,wharris/esmre