Change needed to ^%ZOSF("SIZE")

A suggested alternative implementation is attached.

Arrgh! Those who write code are doomed to improve it!!! And those who use GT.M are doomed to finding alternative (and even occasionally better) ways of doing things.

Here is a slightly simpler and more efficient setexample.m that uses $STACK() rather than ZSHOW:"S" into a local variable.

Also, someone pointed out to me that on some platforms, ls -l on some Linuxes may use multiple spaces, and consequently the use of $PIECE() to get the size is not that robust. So, I am attaching a new utility program _MPIECE.m (like $PIECE() but which treats multiple occurrences of the separator as a single occurrence).

I make no claim of copyright to sizeexample.m (i.e., please consider it to be an example of code in the public domain). As _MPIECE.m is intended to eventually go into a GT.M release, it has the standard FIS copyright for GT.M utility programs, and is provided here under the terms of the GNU Affero General Public License version 3 (http://www.gnu.org/licenses/agpl.txt).