(!1688) os: directly set console verbosity level, instead of using LogSetParameter()

No need for extra call to some demuxer function for nothing but setting a
simple int variable. Setting verbosity level really is nothing more than just
writing some value into a variable, so it's trivial to just to do that, instead
of having an unncessarily complex "universal setter" for that.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>

test/signal-logging.c

@@ -150,7 +150,7 @@ number_formatting(void)
                                 -0x7FFFFFFFFFFFFFFF, /* Maximum 64-bit signed number */
     } ;
 
-    LogSetParameter(XLOG_VERBOSITY, -1);
+    xorgLogVerbosity = -1;
 
     for (i = 0; i < ARRAY_SIZE(unsigned_tests); i++)
         assert(check_number_format_test(unsigned_tests[i]));
@@ -182,7 +182,7 @@ static void logging_format(void)
     uintptr_t ptr;
     char *fname = NULL;
 
-    LogSetParameter(XLOG_VERBOSITY, -1);
+    xorgLogVerbosity = -1;
 
     /* set up buf to contain ".....end" */
     memset(buf, '.', sizeof(buf));