Instead of expanding the scripts table with script values for the code points
>= 0x10000, it has been merged with the properties table in order to
increase perfomance of the script itemization code (not affected yet).
(Stats: the properties table grew up in 97428-89800 = 7628 bytes;
the old scripts table was of size 7680 bytes)
The outdated ScriptsInitial.txt and ScriptsCorrections.txt file has been removed
(they were just empty, the "corrigendum" script corrections should be applied
to Scripts.txt directly, *no customization allowed*!).
More script testcases has been added - at least one per supported script.
Task-number: QTBUG-6530
Change-Id: I40a9e76f681e2dd552fd4c61af0808d043962e79
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>