[CMake] signature separator

[Bill Hoffman]

On 9/4/2013 7:35 AM, Rolf Eike Beer wrote:
> No, and this seems to be a problem with mailman. At least that is what I
> was told when I brought up the topic a while ago and the Kitware guys
> tried to solve it. Sadly the signature became even larger since then :/
Odd thing is it sometimes works...

For example this message works for me in Thunderbird:

http://www.cmake.org/pipermail/cmake/2013-September/055644.html

I am not sure what the difference is...  In the mailman interface there 
is a space after the --

Maybe it has to do with html emails?

-Bill