[add '-t' to only run typechecker on regression tests
John Meacham <john@repetae.net>**20100728092604
 Ignore-this: bbdda26aac6c1c25cac8d4978af5bdc4
] hunk ./regress/regress.prl 29
+my $opt_tc;
hunk ./regress/regress.prl 44
+    t => \$opt_tc,
hunk ./regress/regress.prl 62
+@opts = (@opts, '--no-ho', '--stop', 'typecheck') if $opt_tc;
hunk ./regress/regress.prl 252
-            next if $no_run;
+            next if $no_run || $opt_tc;