XML data host and file reference variables

[ilidio-lopes]

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Check the test cases in the PR . XML data host variables can be in a sample code

        Identification Division.
        Program-Id. 'TEST1'.
        Data Division.
         Working-Storage Section.
       01 VAR3 USAGE IS SQL TYPE IS XML AS CHARACTER LARGE OBJECT (10 M).
       01 VAR-NAME4 USAGE IS SQL TYPE IS XML AS CHAR LARGE OBJECT (10 G).
       01  VAR-NAME5 USAGE IS SQL TYPE IS XML AS CLOB (20)
       01  VAR-NAME6 USAGE IS SQL TYPE IS XML AS DBCLOB (30 K)
       01  VAR-NAME7 USAGE IS SQL TYPE IS XML AS BLOB-LOCATOR.
       01  VAR-NAME8 USAGE IS SQL TYPE IS XML AS CLOB-LOCATOR.
        PROCEDURE division

• Test A
• Test B

Checklist:

• Each of my commits contains one meaningful change
• I have performed rebase of my branch on top of the development
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have checked my code and corrected any misspellings

[Nurkambay]

@ilidio-lopes please resolve conflicts

[ap891843]

I suggest rebase with development. Can see 2 unnecessary commits bdc1080 and 5890e35
rest LGTM

[ap891843]

1. add a use case for level 2-48 and a level 49 with error
2. Two unnecessary commits bdc1080 and 5890e35