PDI-12456: Capture STDERR messages
[PDI-10529] Append to OPT environment variable

Append arguments to OPT variable instead of overwrite in control scripts.
Allows Java command line arguments to be set from external sources in a standardized manner.
Merge pull request #621 from hudak/PDI-105297

[PDI-105297] Append to OPT environment variable in control scripts
[PDI-12472] - JSON Output Functionality Changes Significantly in 5.1 from 5.0

Rolling back to a known good state
Merge pull request #622 from rfellows/dev

[PDI-12472] - JSON Output Functionality Changes Significantly in 5.1 from 5.0
[PDI-12482] - Reverting Encr arg check as 2 and only 2 arguments are always used
Merge pull request #625 from brosander/PDI-12482-master

[PDI-12482] - Reverting Encr arg check as 2 and only 2 arguments are alw...
[PDI-3836] - Prompting user for confirmation when deleting a file
Merge pull request #628 from brosander/PDI-3836

[PDI-3836] - Prompting user for confirmation when deleting a file
[PDI-9514] - utilizing spoon.sh to launch other main methods in a uniform manner
Merge pull request #629 from brosander/PDI-9514

[PDI-9514] - utilizing spoon.sh to launch other main methods in a unifor...
[PDI-12347] - SQL parsing was always starting from beginning of string, added unit tests, made it discard already processed segments, upped timeout in MetricsPainterTest
Merge pull request #630 from brosander/PDI-12347

[PDI-12347] - SQL parsing was always starting from beginning of string, ...
PDI-3723 - Repository Explorer - Missing "Are you sure" warning dialog when deleting an empty Folder from the Repository - fix and small refactoring
[PDI-3874] - Repository Configuration Dialog is wrong
Merge pull request #631 from akhayrutdinov/PDI-3723

PDI-3723 - Repository Explorer - Missing "Are you sure" warning dialog when deleting an empty Folder from the Repository
PDI-12513 - prompt to close tabs even if welcome tab is active
Merge pull request #633 from pentaho-skarmali/PDI-12513_bypass_closing_all_trans_execute_perms

PDI-12513 - prompt to close tabs even if welcome tab is active
[PDI-8958] In Directory Selection dialog can not delete or rename a directory
Merge pull request #609 from mtucker-pentaho/patch-1

PDI-12456: Capture STDERR messages