- The C-library function tmpnam() is deprecated since a while. Therefore naviserver has deprecated ns_tmpnam as well. Therefore we introduce a new function "ad_tmpnam" which requires just a minimal change and uses ns_mktemp.
- added argument "-passing_style" to search::content_filter to make explicit whether data contains content or a file name. Previously, text/* meant automatically passing-style string, leading to missing results when plain files were added to the content repository - added filter for text/plain - fixed filter for text/html - further clean up