Introduces a constant for TALEND_EXECUTION_TYPE to ease code read.
TMDM-6616: "Data Model Length does not change the table definition attribute size"

Takes into account xsd:length facet when parsing a simple type definition.
TMDM-7475 Update initial X_DIGEST field for TMDM_DB_SYSTEM database.
https://jira.talendforge.org/browse/TMDM-7475
TMDM-7496: "'contains the word(s)' on complex type field doesn't work when using full text "

Adds "equals" to the predicate forbidden for full text contains optimization (can't be correctly transformed in Lucene query).
Merge branch 'master' into prototype/joint_er