[indic-table] Remove block range from data table

No functional change.
[indic-table] Make table more compact by not covering full blocks

-#define indic_offset_total 4416
+#define indic_offset_total 3816

-}; /* Table occupancy: 60% */
+}; /* Table occupancy: 69% */
[indic-table] Fix compiler warning
[indic-table] Speed up lookup
[indic-table] Black-list Thai, Lao, and Tibetan

We don't need Indic table for those.
[arabic-table] Read Blocks.txt and shuffle code around

No functional change.
[arabic-table] Use short names for values

No functional change.
[arabic-table] Don't write comments

No functional change.
[indic-table] Minor

No output change.
[indic-table] Make output stable
[arabic-table] Use segmented table

No functional change.