tuned message;

be more explicit about pre- and postprocessor, particularly code_abbrev

removed obsolete codegen setup; Stream -> SCons; tuned

merged

tuned patterns;

support for polml-5.5.2; support Thread.numPhysicalProcessors of polyml-5.5.2 (according to SVN 1890); clarified max_threads: store plain value internally, reproduce result only on startup, and thus avoid potential system overhead;