Updated Doxygen documentation for regdata::masked_data from the old text about arrays to the current std::vector().


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/genabel@1711 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Added and updated Doxygen documentation for the regdata and coxph_data classes.
Moved the default coxph_data() constructor from the .h file to the .cpp file. Removed the empty destructor.


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/genabel@1712 edb9625f-4e0d-4859-8d74-9fd3b1da38cb