branches/zip: scripts/dynconfig: Correct misleading usage message.

At present, the script only accepts one command line parameter.
Append newline to some die messages, so that the Perl interpreter
will not print the file name and line number of the failing statement.

scripts/dynconfig

@@ -105,14 +105,14 @@ sub squeeze($) {
 	return(rtrim(ltrim($string)));
 }
 
-if ($#ARGV < 0) {
-	die "usage: $0 <path/to/mysqlbug> [options e.g. CC=gcc CXX=gcc]\n";
+if ($#ARGV != 0) {
+	die "usage: $0 path/to/mysqlbug\n";
 }
 
 open(F, $ARGV[0]) ||
-	die "Error opening $ARGV[0]: $!";
+	die "Error opening $ARGV[0]: $!\n";
 read(F, $buffer, 131072) ||
-	die "Error reading file $ARGV[0]: $!";
+	die "Error reading file $ARGV[0]: $!\n";
 close(F);
 
 my @matched = grep(/^CONFIGURE_LINE=/, split(/\n/, $buffer));
@@ -122,7 +122,7 @@ if ($#matched == -1 ) {
 	die "CONFIGURE_LINE= not found in : $ARGV[0]\n";
 # Check if more than one line matched
 } elsif ($#matched > 0) {
-	die "Error: $#matched matches found.\n";
+	die "Error: $#matched matches for CONFIGURE_LINE= found.\n";
 }
 
 # Since CONFIGURE_LINE is an environment variable we extract the value,