A few fixes
fix small typos (False -> false)
local-ize a couple of variables
rules_all has to be global.  made it so, confined to pipeworks.{} table
mesecons_rules must be global.  made so, confined to pipeworks.{} table.
local-ize a couple more variables
fix a missed function name (due to being renamed)
local-ize a couple of variables, code style fixes
Fix item transport code
Fix node breaker, use new minetest.swap_node
A few more fixes (spamming the commit log again...)