Backed out 1 changesets (bug 1393817) for failing to repackage the nightly build on Windows a=backout.

Backed out changeset 25f21f22a34b (bug 1393817)

browser/config/mozconfigs/win32/mingw32

@@ -8,6 +8,10 @@
 # MinGW does not have (or need) makecab
 unset MAKECAB
 
+# These aren't supported on mingw at this time
+# Bug 1393817
+MOZ_AUTOMATION_L10N_CHECK=0
+
 # Sets:
 #  build/mozconfig.common
 #    AUTOCLOBBER=1

python/mozbuild/mozbuild/action/exe_7z_archive.py

@@ -9,7 +9,6 @@ import shutil
 import sys
 import subprocess
 import tempfile
-import buildconfig
 import mozpack.path as mozpath
 
 def archive_exe(pkg_dir, tagfile, sfx_package, package):
@@ -19,7 +18,7 @@ def archive_exe(pkg_dir, tagfile, sfx_package, package):
             shutil.move(pkg_dir, 'core')
         subprocess.check_call(['upx', '--best', '-o', mozpath.join(tmpdir, '7zSD.sfx'), sfx_package])
 
-        subprocess.check_call([buildconfig.substs['7Z'], 'a', '-r', '-t7z', mozpath.join(tmpdir, 'app.7z'), '-mx', '-m0=BCJ2', '-m1=LZMA:d25', '-m2=LZMA:d19', '-m3=LZMA:d19', '-mb0:1', '-mb0s1:2', '-mb0s2:3'])
+        subprocess.check_call(['7z', 'a', '-r', '-t7z', mozpath.join(tmpdir, 'app.7z'), '-mx', '-m0=BCJ2', '-m1=LZMA:d25', '-m2=LZMA:d19', '-m3=LZMA:d19', '-mb0:1', '-mb0s1:2', '-mb0s2:3'])
 
         with open(package, 'wb') as o:
             for i in [mozpath.join(tmpdir, '7zSD.sfx'), tagfile, mozpath.join(tmpdir, 'app.7z')]: