secil2tree is the SELinux CIL AST writer. It calls the cil functions
cil_write_parse_ast(), cil_write_build_ast(), or cil_write_resolve_ast()
to write out the parse tree, the CIL AST after the build phase, or the
CIL AST after the resolve phase.
Signed-off-by: James Carter <jwcart2@gmail.com>