extra-cmake-modules: ECM_VERSION() macro

[Alexander Neundorf]

Hi,

in extra-cmake-modules we have a file ECMVersion.cmake, which contains a macro 
ecm_version().

This macro is not documented, and "ecm_version()" is not a good name for a 
function (or macro), since it doesn't contain a verb.

How is this macro intended to be used ?
Is it intended to be "public" or is it used only internally ?

We have to be careful, once we ship a release we must keep compatibility.

Alex