[COMMITTED] build-many-glibcs.py: Fix s390x-linux-gnu.

[Stefan Liebler]

The recent commit 638d437dbf9c68e40986edaa9b0d1c2e72a1ae81
"Deprecate s390-linux-gnu (31bit)"
leads to:
FAIL: compilers-s390x-linux-gnu gcc build
when it tries to build 31bit libgcc.

The build is fixed by explicitely disabling multilib.
---
 scripts/build-many-glibcs.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scripts/build-many-glibcs.py b/scripts/build-many-glibcs.py
index 25551ed038..79cbe59c4b 100755
--- a/scripts/build-many-glibcs.py
+++ b/scripts/build-many-glibcs.py
@@ -439,6 +439,7 @@ class Context(object):
                                  '--disable-multilib'])
         self.add_config(arch='s390x',
                         os_name='linux-gnu',
+                        gcc_cfg=['--disable-multilib'],
                         extra_glibcs=[{'variant': 'O3',
                                        'cflags': '-O3'},
                                       {'variant': 'zEC12',
-- 
2.52.0