Tclreadline Versions Save

Allow the library to load relative to the tcl package scripts Do not generate errors on errorCode or errorInfo when undefined Replace links with files in autoconf/automake components

Enhancement autogen.sh will now honor NOCONFIGURE. The autogen.sh will now generate code based on the TCL stub library.

NOCONFIGURE=1 ./autogen.sh
./configure --enable-tclstub
make

Make FREE() macro a legal expression.

Update version in configure.ac

Re-release with configure script, per discussion with @snoe925

(replaces v2.3.3 due to .gitignore conflict)

• Implement --with-tk=no in configure script.
• Modernize AM_INIT_AUTOMAKE usage and fix build, run tests in CI
• Find tkConfig.sh from macOS stock libraries
• Normalize home directory in prompts to avoid display oddities

Fix missed autoconf version settings. Add libtool if present to autogen.sh. Use libtoolize in autogen.sh if present. Oddly installing libreadline-dev removed libtoolize. Very confusing.

Platform build enhancements. Auto save history. See commit history for details.

• TclOO objects are recognized and tab completion is now provided for methods.
• iTcl objects are recognized and tab completion provided for methods plus variable name completion provided for cget and configure methods.
• $ regression fixed.
• regression in tab completion of filenames of external commands is now fixed.
• tclreadline is now compatible with GNU Readline 6.x.
• Several new test cases have been added.

Sincere thanks to @dbohdan for this work. This work was funded by a bounty program established by FlightAware (https://github.com/flightaware/Tcl-bounties) and fulfilled the terms of the bounty offered for work on tclreadline.