• assert: drop assert.exception=1, assert.bail=1 and "custom exception" from the always returns true list, since those cases throw or bail instead of returning true.
• dl: with enable_dl off (or DL unsupported) an E_WARNING is emitted and false is returned, not an E_ERROR + stop.
• getrusage: mode 1 (RUSAGE_CHILDREN) collects child-process usage, not threads.
• get_defined_constants: E_ALL is 30719 (was 2047, an outdated value).
• versions.xml: remove duplicate get_required_files and get_defined_functions (belongs to funchand, no page in reference/info/).

Touched files were also brought up to the DocBook style enforced by CI (inline-only <para> to <simpara>, exception classes to <exceptionname>).