longlong.h on mips with clang
* mpi/longlong.h [__mips__]: Use C-language version with clang.
clang doesn't recognise =l / =h assembly operand specifiers but apparently
handles C version well.
[jk: add changelog, rebase on libgcrypt repository, reformat changed line so it
does not go over 80 characters]
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>