clean of string from frontend key for module.
fix value of intree key.
allow sufficient space for rename of interdependences.
fix use of parse_list functions even in case of multiple line.

This reverts commit 87bd69c6.

Reduce use of HEAP memory with
the stack_xxx functions familly.
Switch to the new lexer algorithm.
Fix the parse of the @runas key.

Parse the service and write the result in a temporary directory. When the write process
is finished the directory is copied to the original service directory overwritten a
same file. The symlink /var/lib/66/system/.resolve/service/<name> is made at the complete
end of the process. So we can clean the mess removing the temporary directory and
avoid to change the original service directory before the end of the process. The state of
system should be clean event on crash of the parse process

Try the current one, if unexisting take the default one.