RegExp: add "IsValidSubNumber" private function
RegExp: validate Sub number
RegExp: add "const" to many functions
RegExp: add functions overloads to deal with named subpatterns like with numbered subpatterns
RegExp: change return type of "RegExp::RegComp" from 'CRegExp*' to 'bool'
Pointer is almost useless and just boolean is actually used
PCRE: fix VC warning
patch is forwarded to upstream: http://vcs.pcre.org/viewvc?view=revision&revision=1358
[win32] PCRE: enable JIT support
RegExp: check PCRE for real JIT support and prepare to support studying of expression
RegExp::GetReplaceString: rewrote
* fix use of unallocated memory with not matched result
* support "\10"-"\20"
* wider use std::string
RegExp: support PCRE study of expressions
CRegExp::GetReplaceString: optimization
RegExp: add ctor doxy
RegExp: add doxy for RegComp
RegExp::RegFind: refactoring
* store and use only needed part of subject string
* allow to specify number of characters to test
* check for invalid startoffset values
* unsigned type for startoffset
RegExp::RegFind: add doxy