* Updating the %getString function.

Description:
Originally, the function would only return a string for scalar values,
and the developer was responsible for selecting the correct %getString*
subroutine depending on the parameter type being converted, whether a
scalar, 1-D, 2-D, or 3-D array.

This change allows the developer to use the scalar %getString function
for any dimension of parameter.

* Adding unit tests for the updated %getString routine.

* Prune the ending ',' when writing the arrays.

* Replacing integer writes with calls to function str(integer).

* Changing the default delimiter to be ;.  Updating tests.

* Addressing Yuxuan's comments.

Description:
Removing commented out code.
Adding subroutine descriptions.
Removing optional delim argument.
Updating comments and replacing getSubstring with %substr()

CASL Ticket # - N/A

* Fixing SELECTTYPE indentation

Description:

CASL Ticket # - N/A

* Addressing review comments. Updating error messages, unit test assertions.

Description:

CASL Ticket # - N/A

* Other review comments. Fixing comment descriptions, updated assertions.

Description:

CASL Ticket # - N/A

* Changing the delimeter from ";" to surrounding '"'s

Description:
This change is primarily for better interoperability with the getField()
subroutine.  In this manner, each entry from a multi-dimensional array
is added to the scalar string as a separate field.

CASL Ticket # - PHI 6173

* Deleting unused variable.

Description:

CASL Ticket # - PHI 6173