testsuite: disable tests for no longer supported bbox-specific date formats

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
fix failures found by randomconfig builds

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
testsuite: remove forgotten debug hack

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Bump version to 1.22.0

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Start 1.23.0 development cycle

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>