added install notes for Crypt::Random
fixed run_time() call to be on the correct object
moved output file deletion log_event call to after the actual deletion, so we can report if it worked
log_event(), when it is warning, also warns the stack_trace if requested
Persistent->lock_row() gains a "no_hack" bool that disables the 1-second-minimum-transaction-time "feature", used by File->add_metadata and PipelineSetup->trigger transactions, which are called in single-process loops; renabled File metadata speed testing in PersistentProfile.t