Revert "Removed LFS Directory" and "Renamed LFS_TGT to TARGET"

This reverts commit c19b864ba5f28c36ba15fd89ddff5a11c10c866e
and 5c77f66c7962c3768ac4e0bcb03aa686c385c314.
TARGET seems to be used by other makefiles and will break the
compilation process if we use it.
The single directory installation doesn't work yet, to be fixed
later.
Reverted install directories to combination known to work