5.3.0.3 firebird race condition

[Chris Willing]

Building 5.3.0.3 using the supplied firebird
(external/tarballs/Firebird-3.0.0.32483-0.tar.bz2) results in
intermittent failure. It seems to be a known problem
(https://www.mail-archive.com/firebird-devel@lists.sourceforge.net/msg13374.html),
possibly fixed in a later version.

In the meantime if I build with --disable-firebird-sdbc (and without a
system firebird), what functionality will be lost?

chris