Rename some opts to be more consistent

[NekkoDroid]

Just noticed some directory long opts used dir= while others used directory=, should all now be consistently directory=.

[behrmann]

I like the longer name a bit better and changing it from -directory to -dir leaves the --directory option, but it's still more consistent than the status quo.

[NekkoDroid]

I am also fine with changing them all to use the longer *-directory=, just the shorter form is used more often current, so I went with that.

[behrmann]

Let's have @DaanDeMeyer weigh in, since he just added another. Either way this PR will need a rebase.

[NekkoDroid]

Changed them to the longer *-directory=. I think I got most of them all with the exception of --wipe-build-dir as that (from what I see) doesn't have a way to keep backwards compat.