Building the current mongo git-master with

`scons --use-system-all --sharedclient --usev8 --ssl all`

ends with the error

"Implicit dependency `src/third_party/boost/libboost_filesystem.a' not found, needed by target `build/linux2/ssl/use-system-all/usev8/mongo/mongo'."

The build should use /usr/lib/libboost_filesystem.a as the '--use-system-all' is specified.

Using the v2.0-branch the build just works fine.

The included typescript is the full build log.