When trying to emulate a cross-device move operation with cp and rm, add a "--" argument after the options so filenames with leading dashes are handled correctly.
When trying to emulate a cross-device move operation with cp and rm, add
a "--" argument after the options so filenames with leading dashes are
handled correctly.

PR:		39318
Submitted by:	Serge van den Boom <svdb@stack.nl>
MFC after:	1 week

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase