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/decl.c

@@ -753,4 +753,8 @@ decl_globals_init(void)
     g.urace = urace_init_data;
 }
 
+#ifndef NO_VERBOSE_GRANULARITY
+long verbosity_suppressions[vb_elements] = { 0L, 0L, 0L, 0L, 0L, };
+#endif
+
 /*decl.c*/