Bug#921069: libxcb-dri3.so.0: added ABI without increasing -version-info

[Simon McVittie]

Package: libxcb-dri3-0
Version: 1.13.1-2
Severity: normal
File: /usr/lib/x86_64-linux-gnu/libxcb-dri3.so.0.0.0
Tags: upstream
X-Debbugs-Cc: steam at packages.debian.org

libxcb-dri3 version 1.13 appears to have added new symbols without increasing
the minor ABI version in its -version-info. This will break anything that
compares libraries by their version info to decide which one is newer.

The Steam Runtime uses libraries' major/minor/micro ABI version info (in this
case 0.0.0) to decide whether to use the system copy of a library or the copy
in the Steam Runtime, depending on which one is newer (#921026). We can
work around this by adding a versioned dependency on libxcb-dri3-0 and
deleting the copy from the Steam Runtime, but this isn't a particularly
scalable solution.

    smcv