wxRTC: added spacing attribute and no-wrap behaviour for table cells.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75105 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Signed-off-by: Marian 'VooDooMan' Meravy <vdm113@gmail.com>

Conflicts:
	src/richtext/richtextbuffer.cpp
Tidied up some file headers and fixed tooltip status accessors.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75106 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
patched for ICC

Signed-off-by: Marian 'VooDooMan' Meravy <vdm113@gmail.com>