package/sysdig: depend on lua ABI version 5.1

Since sysdig is compatible with lua interpreters that provide the
version 5.1 ABI we should depend on that instead of unconditionally
selecting luajit.

Use luainterpreter as the dependency, now that either lua or luajit
can be used.

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
[yann.morin.1998@free.fr:
  - reorder dependencies in Config.in: package deps go after toolchain
    deps
  - keep the toolchain deps together in the comment
  - switch to using luainterpreter as a build dependency
  - split the now-long _DEPENDENCIES list
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>