Before Unicode 4.1.0 there was an error in the example code for Hangul
normalization that used <= on the ends of some ranges of values, where
they should have used < tests. This was faithfully copied but the need
for correction has only lately come to light.
Thanks to Ma Lin for pointing this out and providing the fix and
test-cases.
Fixes: QTBUG-71894
Pick-to: 6.2 6.1 5.15
Change-Id: I5c7fec1f9fac1f7a25b2d5e9c3109a90a7ff49e1
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>