Resolution
To enable non default language support in Webalizer, it must be compiled with needed language support. The steps are:1. download Webalizer tar.gz file, for example:
2. compile webalizer with new language support, for example German:
(Note: 'gcc' and 'make' packages must be installed on the server. If you VE have then the 'devel' template must be installed on the corresponding VE)
# tar zxf webalizer-2.01-10-src.tgz
# cd webalizer-2.01-10
# ./configure --with-language=german --enable-dns --with-db=/usr/include/db4 --with-dblib=/usr/lib/
# make 3. Then original 'webalizer' binary should be replaced with new one:
# cp /usr/bin/webalizer /usr/bin/webalizer_orig
# cp webalizer /usr/bin/webalizer