SP-798 - Backport of PDI-9790 - Job finishes successfully even though the logging process falls over (5.0)

PDI-9790 - Job finishes successfully even though the logging process falls over

Unit tests moved to global test folder, test execution added to ant
tests-blackbox task
SP-798 - Backport of PDI-9790 - Job finishes successfully even though the logging process falls over (5.0)

apply checkstyle

modified:   ui/src/org/pentaho/di/ui/spoon/job/JobGridDelegate.java
SP-798 - Backport of PDI-9790 - Job finishes successfully even though the logging process falls over (5.0)

Spoon metrics tab refresh interval is 2 seconds now.

Conflicts:
	ui/src/org/pentaho/di/ui/spoon/job/JobGridDelegate.java
SP-798 - Backport of PDI-9790 - Job finishes successfully even though
the logging process falls over (5.0)

PDI-9790 - Job finishes successfully even though the logging process

fix for write Log exception errors.

Conflicts:
	core/src/org/pentaho/di/core/database/Database.java
	engine/src/org/pentaho/di/job/Job.java
	engine/src/org/pentaho/di/job/entries/trans/JobEntryTrans.java
	engine/src/org/pentaho/di/trans/Trans.java

modified:   core/src/org/pentaho/di/core/database/Database.java
modified:
core/src/org/pentaho/di/core/database/messages/messages_en_US.properties
new file:
core/src/org/pentaho/di/core/database/util/DatabaseLogExceptionFactory.java
new file:
core/src/org/pentaho/di/core/database/util/LogExceptionBehaviourInterface.java
modified:   engine/src/kettle-variables.xml
modified:   engine/src/org/pentaho/di/job/Job.java
modified:
engine/src/org/pentaho/di/job/entries/trans/JobEntryTrans.java
modified:
engine/src/org/pentaho/di/job/messages/messages_en_US.properties
modified:   engine/src/org/pentaho/di/trans/Trans.java
modified:
engine/src/org/pentaho/di/trans/messages/messages_en_US.properties
modified:   test/org/pentaho/di/job/JobTrackerExecutionTest.java
Merge pull request #347 from prakapenka/SP-798

SP-798 - Backport of PDI-9790 - Job finishes successfully even though the logging process falls over (5.0)