Destination field is replaced by StdXXX key field.
StdXXX s6log type accept now path for a specific destination.

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.