Bug 1535580 - update linux/mac searchfox jobs for clang changes; r=kats

We need to install a new enough binutils for both of these jobs and
ensure that it's properly found on the linux job.

Differential Revision: https://phabricator.services.mozilla.com/D23678

--HG--
extra : moz-landing-system : lando

browser/config/mozconfigs/linux64/debug-searchfox-clang

@@ -2,7 +2,7 @@ MOZ_AUTOMATION_BUILD_SYMBOLS=0
 MOZ_AUTOMATION_PACKAGE_TESTS=0
 MOZ_AUTOMATION_L10N_CHECK=0
 
-. "$topsrcdir/build/mozconfig.common"
+. "$topsrcdir/build/unix/mozconfig.unix"
 
 ac_add_options --enable-debug
 

taskcluster/ci/searchfox/kind.yml

@@ -48,6 +48,7 @@ jobs:
             tooltool-downloads: public
             keep-artifacts: false
         toolchains:
+            - linux64-binutils
             - linux64-clang
             - linux64-nasm
             - linux64-node
@@ -80,6 +81,7 @@ jobs:
             tooltool-downloads: internal
             keep-artifacts: false
         toolchains:
+            - linux64-binutils
             - linux64-cctools-port
             - linux64-clang
             - linux64-hfsplus