Remove :GoDefStack

[arp242]

Fixes #1431

[bhcleek]

Since ctrl-] is mapped to GoDef, I would also like to see CTRL-t mapped to CTRL-O instead of having the custom mapping for CTRL-t completely removed (personally, I use ctrl-t a lot)...

[font]

I'm not sure that mapping ctrl-t to ctrl-o is going to work like one would expect. Specifically, ctrl-o tracks a lot more movements in the stack than just jumps via :GoDef. See my comment in #1431.

[fatih]

@font is right. We need to come up with a solution that only tracks file jumps, but not mark jumps. I think there was a special command where you could feed the jumps yourself.

[arp242]

Note I'm not going to work on this in the foreseeable future; I just thought it would be a quick change, but looks like a but more work is needed here. If someone wants to base their changes off this PR then they're more than welcome :-)