Merge branch 'wavefunction_and_dm' of https://github.com/andyras/dynamix into wavefunction_and_dm

* 'wavefunction_and_dm' of https://github.com/andyras/dynamix:
  modified backup function so it does not create nested backups
  simplified timestamp for backup folders
  added -no-multibyte-chars flag to Makefile, this seems necessary on tim