wx: Fix initializations on mac osx

Remove dummy windows and move the console to gui app code before
wxWidgets gets initialized to prevent hangings on current wxWidgets svn
version.
wx: Enable configure flags --with-wxdir --with-wx-prefix on windows
wx: Fix cleanup of event handlers

Event handlers was not removed after objects/process had been
delete/died, which causes memory leakage and that fun's was
kept in the wx_server process. Code that might be purged and
the server died.
wx: Fix compiler warnings
wx: Fix compilation on old macs
wx: Fix looping debug printout

Find endless loop, if we wxe_master is killed we can't send messages
to it.
fix documentation
wx: Fix crash in wxe_server cleanup

Do not use disconnect event listener when we are exiting the port, it may
interfere with window destructions and cause a crash.
wx: wxListBox::Set crashes on wxWidgets 3.0 with NULL argument
wx: Update documentation links to wxWidgets
wx: Fix compiler options for xcode 5.0

We need to pick up the macosxmin version wxWidgets was compiled with
wx: Fix initialization

The first window didn't get activated when using old method and new wxWidgets-3.0.1.
Merge branch 'dgud/wx/fix-wx-init-macosx/OTP-11393' into maint

* dgud/wx/fix-wx-init-macosx/OTP-11393:
  wx: Fix initialization
  wx: Fix compiler options for xcode 5.0
  wx: Update documentation links to wxWidgets
  wx: wxListBox::Set crashes on wxWidgets 3.0 with NULL argument
  wx: Fix crash in wxe_server cleanup
  wx: Fix looping debug printout
  wx: Fix compilation on old macs
  wx: Fix compiler warnings
  wx: Fix cleanup of event handlers
  wx: Enable configure flags --with-wxdir --with-wx-prefix on windows
  wx: Fix initializations on mac osx
wx: Fix silent make rules
Prepare release