This commit was manufactured by cvs2svn to create branch
'QUICKBOOK_INCLUDE'.

svn path=/branches/QUICKBOOK_INCLUDE/boost/tools/build/; revision=29324
qbk-scanner to track dependencies on included qbk files

svn path=/branches/QUICKBOOK_INCLUDE/boost/tools/build/; revision=29334
integrate Joao's fixes from the main branch

svn path=/branches/QUICKBOOK_INCLUDE/boost/tools/build/; revision=29375
merge build-system.location rule changes into QUICKBOOK_INCLUDE branch

svn path=/branches/QUICKBOOK_INCLUDE/boost/tools/build/; revision=29890