EC-ISA: add intelligent table cache
EC-ISA: avoid usage of table cache lock outside the class implementation by introducing the setEncodingTable/setEncodingCoefficient methods
Merge pull request #2409 from apeters1971/wip-ec-isa-table-cache-refac-master

EC-ISA: add intelligent table cache

Reviewed-by: Loic Dachary <loic-201408@dachary.org>