Bug 1243363 followup, point mozconfigs at the new place for beta/release

--HG--
extra : rebase_source : 564777b4010acbd9c6c428dd26d58b538631fe35

browser/config/mozconfigs/linux64/beta

@@ -11,5 +11,5 @@ ac_add_options --enable-verify-mar
 
 mk_add_options MOZ_PGO=1
 
-. "$topsrcdir/build/unix/mozconfig.rust"
+. "$topsrcdir/build/mozconfig.rust"
 . "$topsrcdir/build/mozconfig.common.override"

browser/config/mozconfigs/linux64/release

@@ -18,5 +18,5 @@ mk_add_options MOZ_PGO=1
 # defines.sh during the beta cycle
 export BUILDING_RELEASE=1
 
-. "$topsrcdir/build/unix/mozconfig.rust"
+. "$topsrcdir/build/mozconfig.rust"
 . "$topsrcdir/build/mozconfig.common.override"

browser/config/mozconfigs/macosx-universal/beta

@@ -10,6 +10,6 @@ fi
 ac_add_options --enable-official-branding
 ac_add_options --enable-verify-mar
 
-. "$topsrcdir/build/macosx/mozconfig.rust"
+. "$topsrcdir/build/mozconfig.rust"
 . "$topsrcdir/build/mozconfig.common.override"
 . "$topsrcdir/build/mozconfig.cache"

browser/config/mozconfigs/macosx-universal/release

@@ -16,6 +16,6 @@ ac_add_options --enable-verify-mar
 # defines.sh during the beta cycle
 export BUILDING_RELEASE=1
 
-. "$topsrcdir/build/macosx/mozconfig.rust"
+. "$topsrcdir/build/mozconfig.rust"
 . "$topsrcdir/build/mozconfig.common.override"
 . "$topsrcdir/build/mozconfig.cache"