granular verbose message suppression mechanics

Switch to using a macro invocation Verbos(n, s) in place of the
flags.verbose checks.

Provide the mechanics for individual suppression of any of the
existing messages that were considered verbose.

Mechanics only - this code update does not provide any means of
setting the suppression bits.

iflags.verbose = 0
is still a master suppression of all the verbose messages.

iflags.verbose = 1
turns on the verbose messages only for those whose suppression
bit is 0 (not set).

src/priest.c

@@ -527,7 +527,7 @@ intemple(int roomno)
                 You("sense a presence close by!");
             mtmp->mpeaceful = 0;
             set_malign(mtmp);
-            if (flags.verbose)
+            if (Verbose(3, intemple))
                 You("are frightened to death, and unable to move.");
             nomul(-3);
             g.multi_reason = "being terrified of a ghost";