gemu-test refactor
gemu-test new tests for sync_modified
gemu-test - clean working dirs + some refactoring
gemu-test - protect with alarm
gemu-test - $VERBOSE, $FASTMODE vars, other_files support
gemu-test - other_files fixtures
gemu-test write_sample_file reworked
gemu-test - caching for treehash (untested)