slaUpdate updates automatically the slalib sources
in an checked out archive.
Just copy the last sla.tar.gz where slaUpdate resides.

run make

The sla_OBJECTS variable in lcu/src/Makefile has to be modified
to the c files we want to use.

The list can be generated with
ls *.c | xargs -n1 | xargs -i basename {} .c | xargs -i echo "{} \\" | sort

VLT headers are updated and one file (aopqk.c) is patched to
VLT needs.
