Running-ng

Fixed
Commands
- `runbms`: apply modifiers in the config file.
- `minheap`: apply modifiers in the config file.

Added
Modifiers
- `JuliaArg`

Runtimes
- `JuliaMMTK`
- `JuliaStock`

Benchmark Suites
- `JuliaGCBenchmarks`

Commands
- `runbms` gains an extra argument, `--skip-log-compression`, to skip compressing log files with `gzip`.

Changed
Base Configurations
- `runbms`: don't sync to `squirrel.moma` for the default `runbms.yml`. **moma machine users should use `runbms-anu.yml` for the old behaviour.**

Fixed
- Gracifully handle empty modifiers strings in configs, such as `openjdk7||foobar`.

Benchmark Suites
- DaCapo specific workarounds are now handled by the `DaCapo` class rather than the `JavaBenchmark` class to avoid confusions.

Fixed
Benchmark Suites
- `DaCapo`: don't explicitly pass `-s default` to DaCapo unless the user requests so by setting the `size` key of `DaCapo` or overriding the sizes for individual benchmarks using the [benchmark specification syntax](./references/suite.mdbenchmark-specification). This is so that users can override the size via `ProgramArg`.

Changed
Commands
- `runbms`: companion programs are now expected to self-terminate.

Fixed
Commands
- `runbms`: better heuristics to detect whether a host is in the moma subnet.

Added
Base Configurations
- DaCapo Chopin Snapshot-6e411f33

Fixed
- Fixed type annotations in untyped functions and make `Optional`s explicit.