[LTP] [PATCH] Define __SIGRTMIN and __SIGRTMAX for MUSL

[Petr Vorel]

Hi Daniel,

> Some libc implementations might differ in the definitions they
> include. Exempli gratia: MUSL does not define __SIGRTMAX nor
> __SIGRTMIN.

> These two tests fail to build because of the missing
> definitions:
>   testcases/kernel/syscalls/ptrace/ptrace05.c
>   testcases/kernel/syscalls/sighold/sighold02.c

> Out of precaution, these two also include this header:
>   lib/tst_sig.c
>   testcases/kernel/syscalls/rt_sigsuspend/rt_sigsuspend01.c

Thanks, merged!

Kind regards,
Petr