Add rice-append task

[pdf]

Adds a task to call rice append on the build result, allowing
embedding of resources into the binary.

[laher]

Hey there. Thanks for your PR, it looks like a great feature.

Unfortunately, it can't be merged in yet because it has been brought into the 'default' tasks and makes no accommodation for the possibility that someone hasn't got rice on their system, or doesn't want to run it. It's just because you added it into TASKS_COMPILE, and those tasks are all run as part of TASKS_DEFAULT. There are people using this tool who would run go get -u and find that their build suddenly breaks.

See https://github.com/laher/goxc/blob/master/tasks/tasks.go#L80

Please remove it from TASKS_COMPILE and into TASKS_OTHER. That would be an easy way to have it merged for now. People who wanted to use rice would then add the extra task into their config (or commandline args).

_NOTE: An alternative would be to assume that someone who hasn't set "import-paths" probably doesn't want to run the tool anyway. So, that'd be an acceptable. I'm not sure it would belong with TASKS_COMPILE though. _

Vague note: it'd also be nice to check if the rice command exists. Not necessarily straightforward to discover executables on the PATH but something to keep in mind. Maybe just running go get would do it (it should be idempotent to run it each time this task is run)

Cheers

[pdf]

Good notes, thank you - should be addressed now.

[laher]

LGTM. Please merge, thanks