Refactored version of the doxify script, including correct handling of
FUNCTIONs with implicit return variables and parameters called 'RESULT'.
Includes Log4Perl module for those perl environments where it is not
installed. (Jeremy Nowell)


git-svn-id: svn://svn.code.sf.net/p/cp2k/code/trunk@14847 bac0169d-1eea-4375-b5f6-f89d2ced9994