wafsamba: Fix ABI symbol name generation

wafsamba: Fix ABI symbol name generation

Commit 0bc5b6f29307ce758774c1b2f48ce62315fdc7f9 changed the script
for generating the ABI symbol version. It broke the ABI by changing all
dots to underscores.

This reverts the commit partially to preserve the dots in the version
part.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15673

Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>

Signed-off-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Günther Deschner <gd@samba.org>
Autobuild-User(master): Douglas Bagnall <dbagnall@samba.org>
Autobuild-Date(master): Tue Aug  6 00:42:56 UTC 2024 on atb-devel-224

(cherry picked from commit 46215ab1b34aa79c4c831ea1c12f73eacf1e8a12)

Autobuild-User(v4-19-test): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(v4-19-test): Tue Aug  6 11:44:00 UTC 2024 on atb-devel-224