* update status in README.md
* enable busybox tests
Adding `CONFIG_DESKTOP` and `CONFIG_LONG_OPTS` to busybox config.
These flags also enable other tests, but those utilities are not
included in `TEST_PROGS`. (eg. awk)
* fix whitespace and small issues
* fix Eq imp for FormatWriter on nightly + beta
* fix indention in multifilereader.rs
* fix intermittent errors in tests