ELF support.  - _C_LABEL where needed  - Rename syscall to _C_LABEL(_syscall) to avoid name conflict with    _C_LABEL(syscall) (this one was a real nightmare to find).
ELF support.
 - _C_LABEL where needed
 - Rename syscall to _C_LABEL(_syscall) to avoid name conflict with
   _C_LABEL(syscall) (this one was a real nightmare to find).

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars