Some /Q(uiet) options for FFIND

#1
I noticed that "/Q" was one of the few options not used by FFIND.

The two I have in mind are these.

1. Totally quite ... produce no output ... the user needs only the _FFIND_* variables ... perhaps simply "/Q"
2. When searching for strings ("/T' and "/E") ... output only filenames (without "---- ", and not the matching lines) ... maybe "/Q1"