What changed in EDuke32, build by build

Fix CON commands leaving useless extra values in the bytecode. They were only valid outside of executable blocks so it was never noticed.

Fix CON compiler line number accounting problem introduced with the optimization that transforms CON_SETVARVAR -> CON_SETVAR if the second parameter is a constant

After some refactoring, several CON error checks done at runtime stood out as things that could be determined at script compile time. They have been moved.

Attempting to compile a CON with something stupid like "mul var 0" or "div var 0" in it now throws an error

Comment out actor and player versions of gamevar manipulation opcodes as they aren't performant with our current switch-based method of processing instructions. This also tweaks the beginning of VM_Execute() to gain a little more performance.

CON syntax extension: the empty "[]" shortcut for accessing a struct at index THISACTOR can now be omitted.

Misc CON fixups

Minor CON compiler cleanup

Direct struct access for tsprite, and break special gamevar access out of Gv_GetVar() and into a separate function like it already was with Gv_GetVarX()

gamedef.cpp and friends: use preprocessor defines instead of hard-coded values for gamevar IDs that are really constants or arrays or structs

CON structure member access readability cleanup

Add per-sound volume support to audiolib. This allows you to control the volume of sounds independently from the distance-based system exposed through CON. To use this, you must define your sounds via the .def syntax and set the "volume" property--default is 1.0.

Tweak gamevar struct shortcut error handling

Prevent OOB array access when EVENT_INVENTORYLEFT or EVENT_INVENTORYRIGHT returns a bad value

Remove compiled CON script from savegames in favor of storing a simple CRC32 value computed from the uncompiled CON text--this means that savegames can now only be loaded if the currently loaded CONs match what was in use when the game was saved.

Move some of the more commonly used CON functions to the top of the switch in VM_Execute(), and promote some of the loop's variables to native_t. Unfortunately, Visual Studio's new clang-format integration took it upon itself to reformat everything. Use diff -w.

make setting a sector's .wallptr call setfirstwall() instead of setting it directly and corrupting the map

Use references in some gamevar stuff

CSV format for CON timing output

Improve CON perf tracking's ability to determine actor names

Backport some CON profiling stuff from Lunatic. Use "printtimes" in the console.

Fix up CON to work with Q16.16 values

Flesh out Fix16 with some operators we need to work with it from CON