During testing, noted that ACCEPT 12345 would sometimes crop up as 02345 or 00345.  Have yet to
find out why.  I put in a 100-millisecond "pause" after sending the "12345", and after that
I never saw the truncated input again.  Very possibly this is pure coincidence, and this
problem will show up again.  If it does, I'll work on it further.

The ultimate solution is to figure out how to make the inferior accept and display data on a
different terminal instance than GDB does.  See the comment for f696b86f

This version also handles some race conditions that were resulting in "...variable not
iterable..." responses that prevented proper display in the VARIABLES pane.

The main functional change is this version's ability to work with the COBOL ACCEPT statement.
All input and output is from the VSC "DEBUG CONSOLE" panel.  The debugging adapter, however,
keeps track of whether GDB thinks the inferior is *running or *stopped.  When *running, all
VSC attempts to talk to the inferior are inhibited, and any keyboard commands are stripped
of the '-interpreter-exec' wrapper and sent in raw form to the inferior.

This seems to work.

The C/C++ debugger for VSC works differently; it sets up pipes for stdin and stdout, which
are used for sending and receiving command information to GDB.  Meanwhile, the inferior's
TTY is redirected to the "Integrated Terminal" pane of VSC.  I didn't try to duplicate that
because I didn't want to take the time at this time, and because after several hours of
investigation I was unable to determine how to set the inferior's TTY to the integrated
terminal pane.

This version of VSIX calls CBL-GDB "CNEXT" when F10/Step-over is invoked

Replaced requests for cobcd.py "print" with "cprint".
Fixed some compilation errors because of resolve calls that didn't have parameters
Determined that variable display on hover is something I can't do because of
names with dashes in them; VSC is uses '-' as a separator, and so I cannot, in
general handled COBOL variable names.
This version also fixes Issue #8 "auto-print when changing variable"

This version is aligned with version 4.1 of cbl-gdb, which in turn depends on
the -fdump=all with LOCAL-STORAGE and the REDEFINES comments

This version is aligned with version 4.1 of cbl-gdb, which in turn depends on
the -fdump=all with LOCAL-STORAGE and the REDEFINES comments

Eliminate the ')' that replaced empty strings; replace it with '""'.  Build in _groupvalue= processing

Eliminate the ')' that replaced empty strings; replace it with '""'.  Build in _groupvalue= processing