Fixes Ember.EnumerableUtils without extend prototypes
Merge pull request #2497 from stefanpenner/master

Fixes Ember.EnumerableUtils without extend prototypes
don't rely on EXTEND_PROTOTYPES
fix failing tests for outerHTML fallback
Document run.scheduleOnce, truncate run.once docs. Fixes #2132.

This is a tradeoff to avoid repeating the docs for scheduleOnce on
once. Most people may intend to use run.once, but scheeduleOnce is
certainly widely enough used to deserve documentation of it's own.
Merge pull request #2498 from stefanpenner/master

don't rely on EXTEND_PROTOTYPES
Merge pull request #2500 from fivetanley/fix-firefox10-fallback

fix failing tests for outerHTML fallback
Merge pull request #2499 from mixonic/scheduleOnce-documentation

Document run.scheduleOnce, truncate run.once docs. Fixes #2132.