Ai use lock status for optimum range choice (scp-fs2open#3762)

* ai use lock status for optimum range choice

* shadowed variable

Ai use lock status for optimum range choice (scp-fs2open#3762)

* ai use lock status for optimum range choice

* shadowed variable

Merge pull request scp-fs2open#3715 from TaGenius/feature/QtInitialSt…

…atusEditor

Split From scp-fs2open#3674 Initial Status Dialog

Merge pull request scp-fs2open#3717 from TaGenius/feature/QtGoalsDialog

Split From scp-fs2open#3674 Goals Dialog

Merge pull request scp-fs2open#3767 from Goober5000/sexp_variable_pro…

…tecc

guard against CTD in sexp variables

Split From scp-fs2open#3674 Ship Editor Bugfixes (scp-fs2open#3716)

* Remove Duplicate function

* Ship Editor Bugfixes

* Bugfixes for Ship editor

* Fix Compiler Warnings

* Add Tristate Checkbox

* Appease Clang

* Actually fix class bug

* Capitalization error fix

* Remove reference to goals dialog

This shouldn't have been added

Split From scp-fs2open#3674 Ship Editor Bugfixes (scp-fs2open#3716)

* Remove Duplicate function

* Ship Editor Bugfixes

* Bugfixes for Ship editor

* Fix Compiler Warnings

* Add Tristate Checkbox

* Appease Clang

* Actually fix class bug

* Capitalization error fix

* Remove reference to goals dialog

This shouldn't have been added

Merge pull request scp-fs2open#3764 from Goober5000/fix_rand32f

fix a major bug in ba.rand32f

Add release notes for 21.4.1

Add head-on laser bitmaps (scp-fs2open#3748)

* version1 of 'head-on'lasers

* version 2 of head on lasers

* better handling of radius/length

* more adjustments and manual switchover angle

* add switchover rate and glow head on

* bugfix

* allow for instant switchover

* clean up and documentation for PRing

* misc fixes

* more fixes

* more fixes