- remove currently unsupported and untested .xotcl files, also c-extensions of the old binary interface. Some of these package might come back later with tests for nx or xotcl.
- Introduced $xotcl_target_doc_dir for generated xotcl documentation. Generate xotcl documentation in this directory. - moved more (hopefully all) xotcl doc components into library/xotcl/doc