[open-cobol-list] CVS (7) - Fix !binary_trunc arithmetic

[Roger While]

CVS updated.
Fix ! binary_trunc arithmetic.
Propogate usage CB_USAGE_COMP_5/X and do
not set it to USAGE_BINARY. We need this for Keisuke's
recent KEEP/TRUNC changes and also for forthcoming
optimization.

For ! binary_trunc,  the only occasion when we do not push the
result through is if we have a SIZE ERROR clause. (Acts as KEEP)

Also,  do not overflow on numeric display items when ! binary_trunc.

Run through "make check" and the NIST "make test"

Roger