PDI-12318 - NullPointerException running job with massive parallel Job/Transformation loads

Fix concurrency issue. Lists being modified concurrently (for parallel
jobs execution must be synchronized).
	modified:   engine/src/org/pentaho/di/job/Job.java
[PDI-12211] - Fix BaseStep Test

Fix diamond operator for compile errors
Merge pull request #694 from prakapenka/PDI-12318

PDI-12318 - NullPointerException running job with massive parallel Job/Transformation loads
Merge pull request #706 from matthewtckr/PDI-12211

[PDI-12211] - Fix BaseStepTest compile errors
[BACKLOG-146] - upgrading postrgres driver to 9.3-1102
Merge pull request #712 from kurtwalker/BACKLOG-146

[BACKLOG-146] - upgrading postrgres driver to 9.3-1102