scan_licence.cpp: Be a little more explicit about recognizing the BSL

licence_info.cpp: Deal with more variants of the Boost Software License and
the Boost.Graph license


[SVN r24022]

tools/bcp

@@ -1 +1 @@
-Subproject commit ad9438d8ce897424f4047b38ae74c9392174c1a7
+Subproject commit a219804455f22ad5b7a8f37f3840694367df172e