remove table formatting (squeeze many spaces into one)

in mysqld--help test.

When mysql is compiled with different options,columns
might have different size (this depends on parameter 
names and some parameters might only be available 
when some option is switched on)

mysql-test/include/mysqld--help.inc

@@ -21,12 +21,16 @@ perl;
   open(F, '<', "$ENV{MYSQL_TMP_DIR}/mysqld--help.txt") or die;
   while (<F>) {
     next if 1../The following groups are read/;
+    # formatting, skip line consisting entirely of dashes and blanks
+    next if /^[\- ]+$/;
+    next if /Value \(after reading options\)/; # skip table header
     next if /^($re1) /;
     next if /^($re2)-/;
     $skip=0 if /^  -/;
     $skip=1 if / --($re2)\b/;
-    # fixes for 32-bit
     y!\\!/!;
+    s/[ ]+/ /; # squeeze spaces to remove table formatting
+    # fixes for 32-bit
     s/\b4294967295\b/18446744073709551615/;
     s/\b2146435072\b/9223372036853727232/;
     s/\b196608\b/262144/;