comctl32: move up-down msg seq test functions into msg.c

[Lei Zhang]

Hi,

This patch moves the message sequence test functions out of updown.c
and into msg.c. The specific tests for the updown control remains in
updown.c.

This patch depends on the patch for Make.rules.in, which is needed to
generate the correct Makefile in the comctl32/tests directory.

--
 Makefile.in |    1
 msg.c       |  226 +++++++++++++++++++++++++++++++++++++++++++++++++
 msg.h       |   71 +++++++++++++++
 updown.c    |  266 +++-------------------------------------------------------
 4 files changed, 312 insertions(+), 252 deletions(-)