Print APR child process error messages to stderr, where the caller can fetch them.  This makes it easier to diagnose execution problems for hook scripts where the problem is encountered by the child process (such as the hook script not being executable or in an unrecognized file format etc.)
Print APR child process error messages to stderr, where the caller can
fetch them.  This makes it easier to diagnose execution problems for
hook scripts where the problem is encountered by the child process
(such as the hook script not being executable or in an unrecognized
file format etc.)

* subversion/libsvn_subr/io.c (handle_child_process_error): New function.
  (svn_io_start_cmd): Set error handler on the process being created.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion