Merge branch 'develop' into feature/jsqlParser
Support for regexp Postgres in SQL
add the support for regex replace in the sql parser
Added support for regexp_like in oracle
fixed  bug in MappingAnalyzer with NOT() in sql
Modified tests for postgres and oracle regex
Improved tests for oracle and postgres
Change JSQLParser to snapshot 9.1, support of MYSQL regex 
in the sql parser and mapping analyzer
Added a test for sparql limit to oracle rownum translation when using
the SesameVirtualRepo with manual metadata
Merge branch 'develop' into bugfix/oracleLimit
Merge branch 'bugfix/oracleLimit' into develop
Merge branch 'feature/jsqlParser' into develop
Merge branch 'develop' into feature/name-refactor

Conflicts:
	obdalib-core/src/main/java/it/unibz/krdb/obda/parser/TableNameVisitor.java
	obdalib-core/src/main/java/it/unibz/krdb/obda/parser/WhereClauseVisitor.java
	obdalib-core/src/main/java/it/unibz/krdb/obda/utils/Mapping2DatalogConverter.java