The current pinned version of the manylinux2010 docker image has an
issue where it is trying to use EoL yum repositories
(see pypa/manylinux#836 for more details). The repository path has been
updated on the latest image. This commit bumps the manylinux2010 docker
image version to use the latest version to get this fix.
This commit adds config options and identifiers for building manylinux
wheels on non-x86 platforms. Based on what travis and manylinux2014
support this includes aarch64 (ARMv8), ppce64le (power pc 64bit little
endian), and the s390x platforms.
Fixes#269