Revision 1058809

0.6.26
- ulri: when failing to send a build to a machine do not try sending all the
  other pending builds there
- ulri: reduce ssh ConnectTimeout to 5 and enable ServerAliveInterval
- ulri, emi:
  o move some code to library functions
  o share the code loading the state from the file tree
- add first test
- improve arch compatibility checking
- do not give up on a build when failing to check its status