Fix off-by-one error and remove utf8 check in mktemp

See merge request redox-os/relibc!148

Add the few last things to get gcc_complete working

See merge request !146

Add Gitlab CI

See merge request redox-os/relibc!140

implement mktemp

See merge request !145

Revert openlibm install script

See merge request !143

Turns out that this only worked because I didn't clean before rebuilding, so it still had access to the old files. Sorry.

Fix openlibm & fenv and add more integer types

See merge request !141

Reuse musl's setjmp implementation

See merge request !139

Install openlibm from Makefile

See merge request !138