Ported *all* my trunk changes not yet merged so far, i.e. revisions 48251-48252,48280,48290,48350,48478,48496,48663-48664,48695,48729-48730; besides dynamic_bitset, these include fixes to setup_boostbook.sh and setup_boostbook.py, and changes to config/suffix.hpp [So: the affected "elements" are: a) the two setup_boostbook scripts, config/suffix.hpp and dynamic_bitset --note: yes, the list is exhaustive: all and only]