Log Message:
gdbm: update to 1.14.1.

Version 1.14.1 - 2018-01-03

* Increment soname current version number.

Version 1.14 - 2018-01-01

* Make sure created databases are byte-for-byte reproducible

This fixes two longstanding bugs: (1) when allocating database file
header blocks, the unused memory is filled with zeroes; (2) when expanding
a mmapped memory area, the added extent is filled with zeroes.

* Fix build with --enable-gdbm-export

* Make gdbm_error global variable thread safe.

* Fix possible segmentation violation in gdbm_setopt

* Fix handling of group headers in --help output.