Merge remote-tracking branch 'remotes/mjt/tags/trivial-patches-2014-02-15' into staging

trivial patches for 2014-02-15

# gpg: Signature made Sat 15 Feb 2014 12:10:46 GMT using RSA key ID 74F0C838
# gpg: Good signature from "Michael Tokarev <mjt@tls.msk.ru>"
# gpg:                 aka "Michael Tokarev <mjt@corpit.ru>"
# gpg:                 aka "Michael Tokarev <mjt@debian.org>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 6EE1 95D1 886E 8FFB 810D  4324 457C E0A0 8044 65C5
#      Subkey fingerprint: E190 8639 3B10 B51B AC2C  8B73 5253 C5AD 74F0 C838

* remotes/mjt/tags/trivial-patches-2014-02-15:
  char/serial: Fix emptyness check
  gitignore: anchor all ignored names
  vl: trim includes
  vl: remove old, long-unused defines
  net: declare struct iovec in checksum.h to fix compiler warning
  linux-user: refactor do_socketcall()
  configure: add hints to a remedy for feature_not_found errors
  configure: add hint of libfdt to DTC dependency not found message
  sparc/leon3: Initialize stack pointer
  misc: Fix case Qemu -> QEMU

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>