Snap for 5490587 from 43ca2e9ec7ac3c361376bb0a0d8b1e4d105ac0e3 to qt-release

Change-Id: Ic72a9e9eaf72a5e64609f18a3d990d457635097f
tree: de027cb8b1709ed868c4995a94b0e3533c4cfa15
  1. libbacktrace/
  2. libunwindstack/