tree 20758b040ce7d1466c49504b5b394598d9f2ea37
parent ecc72b5ae6048251c818aac103aed7561c2fdc4c
author Ian Cottrell <ian.the.hat@gmail.com> 1513361788 -0500
committer GitHub <noreply@github.com> 1513361788 -0500
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Add GoContext (#1140)

* Add GoContext

This collects up all dependancies that were on the toolchain, but shoudld be in
target configuration (rather than host) and migrates them to a common
go_context_data dependancy.
It then adds a GoContext object, that holds the toolchain, build mode, standard
library and all mode specific attributes. go_context(ctx) will build one of
these and prepare to use it.
This simplifies a lot of the logic in the rules, and helps enforce the isolation
of action methods from ctx attributes.

* Review feedback plus documentation