[ubsan] Link shared runtime library with a version script.

Summary:
Do not reexport libgcc.a symbols and random sanitizer internal symbols
by applying a version script to the shared library build.

This fixes unwinder conflicts on Android that are created by reexporting
the unwinder interface from libgcc_real.a. The same is already done in
asan and hwasan.

Reviewers: vitalybuka, srhines

Subscribers: mgorny, #sanitizers, llvm-commits

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D78325