Minor improvements and fixes

• adding author name(s) to packages in bug/todo lists (honoring author_in_report setting)
• new config keyword javadoc_shortdesc_mode to define how the short desc is cut out of the full desc
• fixes for whereused_scan_shortrefs: no more self-references or crashes with "index out of range"
• new Javadoc tag @ignorevalidation (e.g. for objects subject to refacturing/obsolidation)
• ignoring comments (-- comment and /* comment */) and string contents when checking parameters to functions/procedures to avoid "wrong parameter (count) evaluation"
• adding check for "ignorefile" (default name: .hsqlignore, configurable in the FileNames section). If that file is found in a directory, contents of this directory (including sub-directories) will be ignored by HyperSQL.