Purpose

@QilongTang noticed a change in the libG folder names copied the bin directory.
I'm not a fan of the libG folders in extern being LibG_ and those in bin being libG_ - but I think this is the least risky change at this point.

Normally this should not be a problem on standard windows, but it might be on mono, mac, linux platforms.

This PR just reverts the copy steps to their previous behavior.

Some alternatives:

1. change all the libG loading to use uppercase paths like
   var libGFolderName = string.Format("Libg_{0}_{1}_{2}", major, minor, build); instead of the lowercase libG.
2. change the folders in extern to be lowerCase and request BRE team to change their names in autogenerated cross merge PR.
3. try to normalize the paths before checking if they exist on disk, using toLower() or some other mechanism - seems like the most work.
4. do nothing - likely will cause problems on other platforms or windows machines that have case sensitive filesystems enabled.

Looking for some feedback/thoughts.

Declarations

Check these if you believe they are true

• The code base is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning, and are documented in the API Changes document.

Reviewers

@QilongTang
@aparajit-pratap

FYIs

@smangarole