No code changes. The tests in all of these scripts write to at least
one temporary file, which is then read and not used again. The file
should be deleted to avoid filling up the disk system.
Support for the CONTAINSBLANKS conditional style was added a while ago.
However, that support was on write only; any cells which used
CONTAINSBLANKS on a file being read would drop that style.
I am also adding support for NOTCONTAINSBLANKS, on read and write.
oleibman