Fix broken behaviour when given append parameter.

This patch makes it so that Lua now goes straight into interactive
mode when not given initrd as a parameter; previosuly it was assuming
that the --append parameter was a file name to be read and executed,
which was broken.

Signed-off-by: Felipe Huici <felipe.huici@neclab.eu>
Reviewed-by: Simon Kuenzer <simon.kuenzer@neclab.eu>

Prevent make from deleting archive headers.

Add a PRECIOUS target to make sure that make does not treat archive
headers as intermediate and ends up deleting them.

Signed-off-by: Felipe Huici
Reviewed-by: Roxana Nicolescu <nicolescu.roxana1996@gmail.com>

Add optional main()

We add a menu option to provide a main() function, and set it to on by
default so that in the standard case a user can choose a platform,
compile and run.

Signed-off-by: Felipe Huici <felipe.huici@neclab.eu>
Reviewed-by: Roxana Nicolescu <nicolescu.roxana1996@gmail.com>

Fix typo in Makefile.uk

Change CPPINCLUDES to CXXINCLUDES

Signed-off-by: Felipe Huici <felipe.huici@neclab.eu>
Reviewed-by: Roxana Nicolescu <nicolescu.roxana1996@gmail.com>

Add dependencies to Config.uk

Select newlib, uktime and ukunistd as hard dependencies.

Signed-off-by: Felipe Huici <felipe.huici@neclab.eu>
Reviewed-by: Roxana Nicolescu <nicolescu.roxana1996@gmail.com>

Remove exportsyms.uk .

We may re-introduce it at some later point in time if needed.

Signed-off-by: Felipe Huici <felipe.huici@neclab.eu>
Reviewed-by: Roxana Nicolescu <nicolescu.roxana1996@gmail.com>

Export symbols

Export lua symbols

Signed-off-by: Felipe Huici <felipe.huici@neclab.eu>
Reviewed-by: Jia He <justin.he@arm.com>

Add patches directory

Patch to rename main function and to add initrd support to main loop.

Signed-off-by: Felipe Huici <felipe.huici@neclab.eu>
Reviewed-by: Jia He <justin.he@arm.com>

Add Makefile.uk

Add lua port Makefile.uk

Signed-off-by: Felipe Huici <felipe.huici@neclab.eu>
Reviewed-by: Jia He <justin.he@arm.com>

Introduce library skeleton

We use the BSD-3-Clause license for this library glue code.

Signed-off-by: Felipe Huici <felipe.huici@neclab.eu>
Reviewed-by: Jia He <justin.he@arm.com>

Initial commit (empty)