Bug 855279 - pass in symbols_path and minidump_stackwalk to marionette unittest script, r=aki

--HG--
extra : transplant_source : Qz%BDv%CA%C9%AFR%17%95%15%D1z%F2T%91%DEw%13%88
Added FENNEC_20_0_1_RELEASE FENNEC_20_0_1_BUILD1 tag(s) for changeset production. DONTBUILD CLOSED TREE a=release
Bug 837940 - mozharness script for gaia-unit-tests, r=aki
Added FENNEC_21_0b2_RELEASE FENNEC_21_0b2_BUILD2 tag(s) for changeset production. DONTBUILD CLOSED TREE a=release
Bug 861426: Add a cmdline switch for update channel r=aki
bug 862018 - move b2g_build.py's clobber() to PurgeMixin. r=rail
Added FENNEC_21_0b3_RELEASE FENNEC_21_0b3_BUILD1 tag(s) for changeset production. DONTBUILD CLOSED TREE a=release
Added FIREFOX_21_0b3_RELEASE FIREFOX_21_0b3_BUILD1 tag(s) for changeset production. DONTBUILD CLOSED TREE a=release
Merge branch 'master' of https://github.com/mozilla/build-mozharness into b2g

Conflicts:
	configs/b2g/releng-beta.py
	scripts/b2g_build.py
Bug 838321: Use b2g manifests to checkout b2g sources. r=aki
Bug 838321: add missing file from previous commit. r=bustage
bug 840305 - mozharness run_command() idle timeouts. r=catlee
bug 813022 - update makefile error list for tbpl. r=edmorley
Bug 847442. Metro test jobs. r=aki
revert d83f0ecb2b6b to see if it helps with osx test oranges.
bug 862017 - port windows clobber fixes to mozharness. r=jhopkins
backout 0308cdea2f32 due to lack of pywin32 on windows test slaves
Bug 861789 - Need an Inari and Hamachi engineering build for v1.0.1. r=aki
bug 862017 - port windows clobber fixes to mozharness. r=jhopkins
Merge branch 'master' of https://github.com/mozilla/build-mozharness into b2g