make: metabug for make issues

[pnkfelix]

Will add issues to this by referring to it from the other bugs (so that their open/closed status is updated accordingly).

Can close when either all make bugs are fixed (hah) or when we move to rustpkg (permanently).

[huonw]

Triage: went through most of the A-build issues ccing this issue when relevant (and closing where possible).

[steveklabnik]

Triage: this is a metabug issue, so no change.

[steveklabnik]

Triage: only change is that hopefully make will be replaced by rustbuild in a near-ish timeframe.

[alexcrichton]

Make's gone, so closing.