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fix: allow `run-groovy` to run inline commands

Baltzell, Nathan requested to merge github/fork/c-dilks/fix-groovy-inline into development

Created by: c-dilks

This allows one to call inline groovy commands with -e. I've done a few tests to make sure things work as expected, but more thorough testing is recommended.

test 1:

Before this PR:

run-groovy -e "println 'hello inline command'"

returns

*****************************************
*    Running COAT-JAVA Groovy Scripts   *
*    Version : 3a  Release : 2016       *
*****************************************

Caught: groovy.lang.MissingPropertyException: No such property: println for class: script_from_command_line
groovy.lang.MissingPropertyException: No such property: println for class: script_from_command_line
        at script_from_command_line.run(script_from_command_line:1)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

After this PR, it returns:

*****************************************
*    Running COAT-JAVA Groovy Scripts   *
*    Version : 3a  Release : 2016       *
*****************************************
 
hello inline command

test 2

I've confirmed the following behavior is the same for both before and after this PR:

// file: check.groovy
args.eachWithIndex { it, idx ->
  println "args[$idx] = $it"
}
run-groovy check.groovy abc def hij

args[0] = abc
args[1] = def
args[2] = hij

test 3

When quoting the arguments, we now get:

run-groovy check.groovy "abc def hij"

args[0] = abc def hij

whereas the behavior from before this PR returns the same output as test 2.

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