cmogstored 1.2.2 - minor maintenance release

This is a minor maintenance release, no need to upgrade unless
a) your gcc defaults to -march=i386 (e.g. 32-bit CentOS 5)
b) your device names include '-' (e.g. Linux device mapper users)

There are also some minor doc updates to clarify tarball vs git
installation and a trivial error-handling fix which should not
affect any current users.

Eric Wong (6):
      build: add check for GCC atomics
      alloc: posix_memalign does not set errno
      iostat_parser: allow '-' for device names
      test/cmogstored-cfg: ensure TMPDIR is absolute for valgrind
      INSTALL: clarify between starting from tarball vs git
      INSTALL: update versions and URLs

cmogstored 1.3 will have some fairly intrusive internal changes
and cleanups to make it easier for users to trace and diagnose
system and network problems.