Move rtems_termios_device_lock_acquire_default() and
rtems_termios_device_lock_release_default() to a file separate from the
general Termios support. This avoids complex dependencies in printk()
only scenarios.
Script does what is expected and tries to do it as
smartly as possible.
+ remove occurrences of two blank comment lines
next to each other after Id string line removed.
+ remove entire comment blocks which only exited to
contain CVS Ids
+ If the processing left a blank line at the top of
a file, it was removed.
