Implement basic setjmp using musl's awesome existing code

Cargo.lock

Cargo.toml

include/bits/setjmp.h

src/lib.rs

src/setjmp/Cargo.toml

src/setjmp/build.rs

src/setjmp/cbindgen.toml

src/setjmp/impl/README.md

src/setjmp/impl/aarch64/longjmp.s

src/setjmp/impl/aarch64/setjmp.s

src/setjmp/impl/arm/longjmp.s

src/setjmp/impl/arm/setjmp.s

src/setjmp/impl/bin/.gitignore

src/setjmp/impl/i386/longjmp.s

src/setjmp/impl/i386/setjmp.s

src/setjmp/impl/m68k/longjmp.s

src/setjmp/impl/m68k/setjmp.s

src/setjmp/impl/microblaze/longjmp.s

src/setjmp/impl/microblaze/setjmp.s

src/setjmp/impl/mips/longjmp.S