Delete a few compiler warnings and some typos that were actual errors. B...

[jimrthy]

For that issue I just created...I'm not sure how to associate the two.

I haven't had a chance to test it seriously (just verified that the basic-window example loads and runs without warnings), but it's all pretty simple and straightforward.

Well, except for adding a dependency to alexandria to use with-gensyms to ignore the error-code in def-error-callback. That probably wasn't such a hot idea.

[AlexCharlton]

Thanks for finding and taking the time to fix these bugs! While I accepted ba6001b, I rewrote your changes in ef98721, mostly to avoid the Alexandria dependency.

A couple of notes that may or may not help you:

• The behavior of with-gensyms is easily provided with a let.
• (error (format nil "Local GLFW is version ~A.~A.~A" major minor rev)) is equivalent to (error "Local GLFW is version ~A.~A.~A" major minor rev)
• You :used the package :cl-opengl in :cl-glfw3-examples, but then didn't take advantage of it. In any case, I had left that out intentionally, in order to make it clear what functions belonged to :gl.

And finally, FYI, you can refer to issues by writing a #, then the issue number (and github conveniently shows you what issue you are referring to)