string representation in Tcl and Python.

It tests the convertion Tcl values to Python values when Tcl calls a command
implemented on Python. Currently all values are passed as strings.

Original patches by Edmond Burnett and Kent Johnson.

running to cope with possibility of gc running just after fork.
(Backport from 3.x.)

completely redundant. After 16638 patch, CallTips.get_argspec trims over-long
signature strings as well as docstring lines.

Idle calltips. This is needed for builtins, such 3.x bytes (which is why 5).
Based on patch by Serhiy Storchaka.

Initial patch by Roger Serwy.

I do not expect a problem in 2.7, but backported this anyway, 'in case'.

For 2.7 backport, fix get_arg_spec as needed to make expanded tests pass.

ZIP file or too long ZIP file comment is truncated.

Patch by Nikolaus Rath.

I didn't realize LC_ALL was an override, and I should have.  I tried to
make a test, but it is not clear that the LC variables actually affect
the strings that uuid is using to parse the command output.

locale-depending str.lower() in locale.normalize().

requires them.  Disable executable bits and shebang lines in test and
benchmark files in order to prevent using a random system python, and in
source files of modules which don't provide command line interface.

Patch from Andrew Barnert.