Add freeze/thaw, shutdown/halt/reboot and password setting support for
FreeBSD.

v2:
1: Reject the idea to move all the Linux-specific code to a separate file.
   First commit now adds initial support of FreeBSD. Fixed device paths
   and fixed virtio device initialization (disable echo). Add comment why
   we should disable the code under HAVE_GETIFADDRS in FreeBSD.
2: Replace the second commit (which now is the first) by moving
   Linux-specific freeze/thaw code to a separate file commands-linux.c.
3: Add error raising if stat() returns error. Replaced strcmp() calls by
   g_str_equal(). Add a comment explaining why UFSRESUME isn't necessary.
4: Replace #elifdef by #elif defined().
5: Now the code doesn't move from one file to aanother but still is
   moving inside file so the patch doesn't become easier to review. =(
   Fixed typos.
6,7: New patches. Add guest-network-get-interfaces command support.

Alexander Ivanov (7):
  qga: Add initial FreeBSD support
  qga: Move Linux-specific FS freeze/thaw code to a separate file
  qga: Add UFS freeze/thaw support for FreeBSD
  qga: Add shutdown/halt/reboot support for FreeBSD
  qga: Add support for user password setting in FreeBSD
  qga: Move HW address getting to a separate function
  qga: Add HW address getting for FreeBSD

 meson.build           |   2 +-
 qga/channel-posix.c   |  14 +
 qga/commands-bsd.c    | 193 ++++++++++
 qga/commands-common.h |  52 +++
 qga/commands-linux.c  | 286 ++++++++++++++
 qga/commands-posix.c  | 843 ++++++++++++++++--------------------------
 qga/main.c            |  13 +-
 qga/meson.build       |   6 +
 8 files changed, 867 insertions(+), 542 deletions(-)
 create mode 100644 qga/commands-bsd.c
 create mode 100644 qga/commands-linux.c

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2.34.1