Just for the record, renamed framework to 'log4rexx' to not clash with the Ruby package

[Rony G. Flatscher (Apache)]

Hi there,

just for the record: have changed the framework to now use the name
'log4rexx' instead of 'log4r', which has been in use for Ruby already:
<http://wi.wu-wien.ac.at/rgf/rexx/orx18/log4r/>.

Regards,

---rony