[issue32484] ImportError for gdbm 1.14

[sds]

New submission from sds <sds at gnu.org>:

After upgrading to gdbm stable 1.14, I get this:
```
>>> import gdbm
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: dlopen(/.../lib/python2.7/lib-dynload/gdbm.so, 2): Symbol not found: _gdbm_errno
  Referenced from: /.../lib/python2.7/lib-dynload/gdbm.so
  Expected in: /usr/local/opt/gdbm/lib/libgdbm.4.dylib
 in /.../lib/python2.7/lib-dynload/gdbm.so
```
This is probably related to this change:
```
* Make gdbm_error global thread safe.
```
(https://lists.gnu.org/archive/html/info-gnu/2018-01/msg00000.html)

----------
components: Library (Lib)
messages: 309392
nosy: sam-s
priority: normal
severity: normal
status: open
title: ImportError for gdbm 1.14
versions: Python 2.7

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<https://bugs.python.org/issue32484>
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