3fa3d79859
doc/, and now www/ trees, but only using the "cvsup" transport. When "make update" is run using a tree's makefile, it can also use "cvs" (except for www/) and "svn" (only src/). Clean up documentation and code regarding "make update": - Increase oddness by adding support for WWWSUPFILE and NO_WWWUPDATE to Makefile.inc1 (analogous to PORTSSUPFILE/NO_PORTSUPDATE and DOCSUPFILE/NO_DOCUPDATE; WWWSUPFILE already supported by www/Makefile). - Document all trees that support CVS_UPDATE. - Document all trees that support SUP_UPDATE. - Document SVN_UPDATE. - Document NO_WWWUPDATE. - make.conf(5) mistakenly said that *SUPFILE* had defaults. - Add an example entry for WWWSUPFILE.