Move aarch64-linux-gnu-gcc to depends rather than makedepends, since
it's a runtime requirement of musl. Drop aarch64-linux-gnu-binutils
because it's implicitly pulled in via gcc.
Thanks to AUR user @mtorromeo for pointing this out.
* new maintainer
* update url to new website
* install wrapper as aarch64-linux-musl-gcc rather than
aarch64-linux-musl-gnu-gcc
* remove obselete --sysroot configure option
* add gitignore
* misc style cleanup