powerpc build failure with GCC mainline -fno-common change

[Florian Weimer]

* Tulio Magno Quites Machado Filho:

>> Perhaps __cache_line_size should be part of _rtld_global?
>
> Having this variable in a single place is ideal, but does it really need to
> be in the loader?

Doesn't the loader need it for its implementation of memset?

The value is determined by parsing the auxiliary vector, so seems
reasonable to do this in the loader.