* Make sure all files have top level headers.
* Fixing a few spelling mistakes.
* Fixed some trailing spaces.
Signed-off-by: Tim 'mithro' Ansell <me@mith.ro>
Sometimes randomly selected scr and dst tiles lead
to unroutable situation. This can be mitigated by
repeating the failed attempt with a new src and dst
tiles.
Signed-off-by: Karol Gugala <kgugala@antmicro.com>