Default linking mode for musl/mips[el] targets


#1

The only linking mode available for musl/mips[el] targets was dynamic linking.

Using crt-static target-feature, https://github.com/rust-lang/rust/pull/47663 adds static linking for musl/mips[el] targets.

The questions is: should musl/mips[el] targets continue to use dynamic linking by default, or switch to static linking by default (like the others musl target)? Note that switching to static linking by default is a breaking change. There is an initial discussion in https://github.com/rust-lang/rust/pull/47663.

What do you think?