tgstation/-tg-station — pull request #6541 by phil235 (2014-12-24 00:55:38+00:00)
Title: Assembly holder no longer needs to be secured.

Assembly holder is no longer secured/unsecured to simplify stuff and to avoid confusion about not being able to use the holder in some cases b/c it's unsecured. Screwdrive now disassemble it and attack_self to interact with its parts.
Also, adding feedback message when trying to attach two assemblies that aren't both in attach mode. Fixes #4147

Fix hacky code to prime grenade by pulsing its assembly.
Removing some commented code and some duplicated proc instances.
Fixing a typo.