Symlink checks should check that the link points to the right place

[selzoc]

In many scripts in this repo, we create a symlink. There are basic checks for existence of a symlink, but not ensuring that the symlink points to the correct file (i.e. something in this repo).

This can be an issue if your machine was previously enthralled by another team's workspace setup script, for example.

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this. Unfortunately, the Pivotal Tracker project is private so you may be unable to view the contents of the story.

The labels on this github issue will be updated when the story is started.

[infews]

@selzoc Do you have an example of this Chris?

[matt-royal]

The lack of this check was causing me to have my RelEng dependencies installed instead of my CAPI ones. I +1 this