removes spider/b2g logic out of custom
Bug 956631 - [tarako][build]create "tarako" build, r=nthomas
Bug 980120 - Add tooltool support to Windows builds; r=bhearsum
Backed out changeset 9c95333cc33f
Bug 976415: get instance metadata from slaves r=bhearsum
finishes draft of mozharness desktop build support in misc
Merge branch 'master' into fx-mh-builds
fixes when has_desktop_mozharness_build is non existant and typo with signing_server