initial empty check-in
Start with the existing relevant code of Tcllib
Char quoting operations
Moved basic documentation fragments into use
Moved core expression operators into use.
Moved operations on expressions into use.
More utilities
Renamed, now that we have more utilities than just quoting
Started on reworking the expression walkers and basic operations on top.
Bringing standard doc fragments uptodate with new location and structure.
Separated expressions from operators, with expression handling having a general implementation using operator specific methods/callbacks.
Added main build script
pt::operator : Fixed a number of typos.
pt::operator : Activated operator testsuite, first tests. Got old expression tests, inactive for the moment.
pt expr: Fix missing command export, and started on the tests.
Build tweak, added kettle references.