Merge remote-tracking branch 'remotes/stefanha/tags/net-pull-request' into staging

Merge remote-tracking branch 'remotes/stefanha/tags/net-pull-request' into staging

Net patches

# gpg: Signature made Fri 25 Apr 2014 15:07:31 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <[email protected]>"
# gpg:                 aka "Stefan Hajnoczi <[email protected]>"

* remotes/stefanha/tags/net-pull-request:
  net: Don't use error_is_set() to suppress additional errors
  net: Make qmp_query_rx_filter() with name argument more obvious
  net: xilinx_axienet.c: Add phy soft reset bit clearing
  net/net.c: Remove unnecessary semicolon
  pcnet: remove duplicate assignment
  tap: Avoid extra iterations while closing file fd

Signed-off-by: Peter Maydell <[email protected]>