[DFSan] Add custom wrapper for _dl_get_tls_static_info.

Implementation is here:
https://code.woboq.org/userspace/glibc/elf/dl-tls.c.html#307

We use weak symbols to avoid linking issues with glibcs older than 2.27.

Reviewed By: stephan.yichao.zhao

Differential Revision: https://reviews.llvm.org/D93053