boost: add version 1.41.0 and modified boost-14x.inc

boost: add version 1.41.0 and modified boost-14x.inc

*1.41.0 fixes a bug with MPI: in 1.40.0 if you don't have the mpi
 libraries installed in your host it fails
*added the dependency on icu because of things like that:
 unicode/utypes.h: No such file or directory
*made it install in ${libdir} instead of ${libdir}/boost-${PV}:
 thanks woglinde for pointing me that a variable existed for that
 that is achieved with -DINSTALL_VERSIONED:BOOL=OFF
*removed an useless like that were here because the recipe was
 copied from the split function was copied from an old boost recipe
 that used bjam