shlwapi: Implement stubs for missing functions required by IE6

[Owen Rudge]

This patch implements stubs for a number of functions in shlwapi that 
are required by IE6. These are:

- SHCreatePropertyBagOnRegKey
- SHGetViewStatePropertyBag
- SHFormatDateTimeA/W
- ZoneCheckUrlExW
- UrlFixupW

Additionally, a proper implementation of IUnknown_UIActivateIO is provided.

With these stubs, IE6 should run successfully with Wine's shlwapi.dll, 
although it'll still crash if certain actions are carried out.

---
  dlls/shlwapi/ordinal.c    |  167 
+++++++++++++++++++++++++++++++++++++++++++++
  dlls/shlwapi/shlwapi.spec |   14 ++--
  dlls/shlwapi/url.c        |   32 +++++++++
  3 files changed, 206 insertions(+), 7 deletions(-)
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