[lmi] Pedantic errors in wx-2.6.2

[Greg Chicares]

Vadim--I fed the output from building lmi's 'skeleton' branch
with wx-2.6.2 into
  grep -w error |sort |uniq
and got the following:

  local/include/wx-2.6/wx/clntdata.h:26: error: extra `;'
  local/include/wx-2.6/wx/clntdata.h:31: error: extra `;'
  local/include/wx-2.6/wx/gdicmn.h:476: error: extra `;'
  local/include/wx-2.6/wx/hashmap.h:684: error: extra `;'
  local/include/wx-2.6/wx/image.h:123: error: extra `;'

so it looks like wx headers are almost "pedantic-clean".
I removed the five semicolons, and the application compiled,
linked, and ran okay.

I didn't look at the macro definitions, but it looks like
the invocations are at namespace scope, where a null
statement actually isn't allowed by the standard, as in
the two-character source file {semicolon, newline}.
With wx already so close to perfect in this respect, it
would be a shame not to fix this somehow.

If you'd rather be able to write semicolons at the end of
all macro invocations, even at namespace scope, then may I
suggest some trick like this:

http://groups.google.com/group/comp.lang.c++.moderated/msg/3e1b9895025f514d