riched20: Implement EM_SETUNDOLIMIT and its conformance tests, take 2

[Matt Finnicum]

Hello,
This is the second version of my first patch for wine, this time
prepared with James Hawkins'  makedraft.py script!

To introduce myself, I'm a freshman at the University of Illinois
(UIUC), studying both Computer Engineering and Computer Science. I'm
hoping to get into the Summer of Code program this year, so I'm
getting familiar with riched20 (where I hope to do most of my
project), and the whole wine-development process.

For the record, I've never worked for Microsoft, have never signed any
NDA's from Microsoft, and have never seen any secret Windows source
code.

I welcome your comments on the patch.
--Matt

Improvements since first posted:
coding style - suggested by Mike Hearn
handling bad input - suggested by Dan Kegel
includes both implementation and tests - suggested by Dan Kegel

Changelog:
riched20: Implemented conformance tests for EM_SETUNDOLIMIT()
riched20: Implemented EM_SETUNDOLIMIT()

  dlls/riched20/editor.c       |   21 ++++++++++++--
  dlls/riched20/editstr.h      |    4 ++-
  dlls/riched20/tests/editor.c |   65 ++++++++++++++++++++++++++++++++++++++++++
  dlls/riched20/undo.c         |   27 +++++++++++++++++
 4 files changed, 112 insertions(+), 5 deletions(-)

--
Matthew Finnicum

Changelog:
riched20: Implemented conformance tests for EM_SETUNDOLIMIT()
riched20: Implemented EM_SETUNDOLIMIT()

  dlls/riched20/editor.c       |   21 ++++++++++++--
  dlls/riched20/editstr.h      |    4 ++-
  dlls/riched20/tests/editor.c |   65 ++++++++++++++++++++++++++++++++++++++++++
  dlls/riched20/undo.c         |   27 +++++++++++++++++
 4 files changed, 112 insertions(+), 5 deletions(-)

--
Matthew Finnicum
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