Added missing stop_reap_all() if returns early from function
mysql-test-run.pl:
  Improved output from --script-debug
  Initial Cygwin support
  Improved mysqld process termination


mysql-test/mysql-test-run.pl:
  Improved output from --script-debug
  Initial Cygwin support
  Improved mysqld process termination
mysql-test/lib/mtr_process.pl:
  Added missing stop_reap_all() if returns early from function