MFC rev. 278728: (backup_kernel_finddir, backup_kernel, install_files): Add missing references to $BASEDIR, in order to allow correct operation when updating a system mounted at another location than / (e.g. when updating an alternate Boot Environment).
MFC rev. 278728:
(backup_kernel_finddir, backup_kernel, install_files):
Add missing references to $BASEDIR, in order to allow correct operation
when updating a system mounted at another location than / (e.g. when
updating an alternate Boot Environment).

Reviewed by:  cperciva

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase