boot-environ does not update environment in pods

[loomis]

The current boot-environ task updates the internal var containing the environment and passes this on to subsequent tasks. However, this does not work for tasks that create their own pods (such as the boot-test task) because modified objects are not passed into pods when they are initialized. This makes testing code which uses environ for configuration difficult (or at least non-intuitive). If the task were to manage a .lein-env file in the fileset in parallel with changes to the var, then the task should work identically for all tasks and make the task more useful.

I have a modified task which does this and can make a pull request if you agree with the suggested change.

[weavejester]

Make it a .boot-env file, and we can change the core library to check for .lein-env or .boot-env. But yes, this sounds like a good idea.

[loomis]

Ok, I'll put together a pull request.

[loomis]

I've responded to all of the comments on the PR and tested the code again. Please take another look and see if there's anything else amiss.