winebrowser: Add DDE support and use DDE by default for shell/open.

[Misha Koshelev]

My DDE execute_from_key patches broke wine start url as apparently this depended on a non-native Wine
behavior to append %1 to a shell/open/command string.

This fixes that dependency on a non-native behavior by adding DDE server support to winebrowser, while
maintaining command line url support as well. This may also help with bug #7953, but that application just
page faults immediately for me, so I'm not sure. I did test various permutations of "wine start url" and
"wine winebrowser url" as well as "wine winebrowser /dde url" and everything worked fine. I also tested
opening a URL from Vector NTI and from Google Picasa, which apparently has a strange way of opening 
URLs (appends url to HKCR\shell\open\command) and it worked fine as well.

---
 programs/winebrowser/Makefile.in |    4 +-
 programs/winebrowser/main.c      |  185 +++++++++++++++++++++++++++++++++++---
 tools/wine.inf                   |   10 ++-
 3 files changed, 183 insertions(+), 16 deletions(-)
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