New module, string/text utilities, 8.5+, string namespace/ensemble
Lots of bugfixes, completed testsuite. First functional state. Still missing documentation.
Documentation for core token, better end-of-string handling.
Documentation for shell tokenization, fixed errors in unquoted word definition, extended testsuite
Module integration into overall Tcllib
Merged string::token packages.
Fixed last-minute doc breakage.
Regenerated embedded documentation.