Clarify behaviour of ffsinfo: It appends to outfile without removing any existing contents.
Clarify behaviour of ffsinfo: It appends to outfile without
removing any existing contents.

PR:		bin/61473
Submitted by:	Alex Popa <razon@ldc.ro>
MFC after:	7 days
Approved by:	rwatson (mentor)

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