[PDI-9782] Data update does not commit if "Enable Connection Pooling" option is enabled for the connection in "Call DB Procedure" step
[PDI-10976] - HSQLDB Dialect is forcing upper case on identifiers
http://jira.pentaho.com/browse/PDI-11502 metadata injection for Postgres BulkLoader
[PDI-9598] toggling KETTLE_EMPTY_STRING_DIFFERS_FROM_NULL variable has no effect on whether a field is recognized as empty or not empty ("Switch/Case" step)
PDI-11420 - Cannot reopen Mapping (sub-transformation) step after saving
with blank value for fieldname to target step.

junit test added
PDI-11420 - Cannot reopen Mapping (sub-transformation) step after saving
with blank value for fieldname to target step.

fix added. 
Avoid to set null for rename target/source values.
If somehow this value already set to null - show empty String on UI to
avoid NPE.
Merge pull request #305 from stepanovdg/PDI-9598

[PDI-9598] toggling KETTLE_EMPTY_STRING_DIFFERS_FROM_NULL variable has no effect on whether a field is recognized as empty or not empty ("Switch/Case" step)
PDI-6976 - The Load Content into Memory Step reports an error on check, even though it is setup correctly
PDI-10451: Refactored compression types into plugins, added unit tests
Merge pull request #330 from mattyb149/PDI-10451

PDI-10451: Refactored compression types into plugins, added unit tests
PDI-10451: Fixed bad imports
Merge pull request #332 from mattyb149/PDI-10451

PDI-10451: Fixed bad imports
[PDI-11333] Updated info.plist and build.xml to insert the proper version into info.plist.
Merge pull request #326 from prakapenka/PDI-11420

PDI-11420 - Cannot reopen Mapping (sub-transformation) step after saving with blank value for fieldname to target step.
Merge pull request #331 from gretchiemoran/master

http://jira.pentaho.com/browse/PDI-11502 metadata injection for Postgres...
Merge pull request #213 from stepanovdg/PDI-9782

[PDI-9782] Data update does not commit if "Enable Connection Pooling" op...
Merge pull request #333 from wseyler/dev

[PDI-11333] Updated info.plist and build.xml to insert the proper versio...
PDI-10451: Fixed unit tests
Merge pull request #334 from mattyb149/PDI-10451

PDI-10451: Fixed unit tests
Checkstyle fixes ...