There were two of it. The "year-match-*" tests have two year fields,
one four-digit the other two-digit, and deal with whether they match.
The second year-match-1999 had, however, only a "yy" year format; it
in fact belongs to the "just-yy-*" family that follows. So rename it.
Amends commit 5108192f67 which landed in
6.7.
Pick-to: 6.7
Task-number: QTBUG-107185
Change-Id: Ibfe0c33cb00dc068d0f670d27c43ec4dc4550c05
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
de5c507a55