[PATCH] elf: unconditionally add dl-static to sysdep-dl-routines in Makefile

[Florian Weimer]

* Carlos Eduardo Seo via Libc-alpha:

> Building dl-static is also needed when building glibc with
> --disable-shared.

Given

>  # This is needed for DSO loading from static binaries.

I think this suggests that ideally, the code that needs this would be
disabled at build time, given that there is no DSO left to load in a
static-only build.