The build script expect that a "boost" folder containing all the
boost headers is moved into the parent directory of "source"!
You do *not* have to build boost. Just copying the plain "boost"
folder into the parent directory of "source" is enough. POV-Ray
3.7 only depends on header-only library parts of boost. Builds
have been tested with boost version 1.43, but it is expected
that versions as early as boost 1.38 will work with POV-Ray 3.7.

