Replace udis86 with a very small x86 decoder

hook_inline() uses the new x86_len() function to get instruction lengths
instead of doing full-blown disassembly, which should be a tiny bit
quicker, and also removes the next for about 90KiB of lookup tables and
such in the final binary. The code-digging logic in demorecord is also
rewritten to be opcode-based rather than mnenmonic based. In general,
going forward the plan is to always rely on opcodes and thus avoid a
bunch of disassembly work every plugin load.

udis86 is still in the tree for now to provide dbg_asmdump(), but it's
only compiled into debug builds and left out of releases completely. As
such, the whole BSD licence statement is also gone from the distribution
LICENCE files. There's now also a dbg_toghidra() which spits out a
rebased address to look stuff up for proper reverse engineering, which
might be more useful than dbg_asmdump() anyway. If nobody ends up using
the latter ever again, udis86 could get chucked completely. We'll see.

Also shoehorned into this commit are a couple more forgotten copyright
year bumps and some general minor cleanup here and there, because I
couldn't be bothered wading through all the diff hunks. Oh, and
makebindist.bat now makes an effort to make the zip file timestamps
predictable/reproducible. That should be a different commit for sure,
but oh well too bad.

1 files changed, 7 insertions, 3 deletions

diff --git a/src/con_.h b/src/con_.h
index c0c37f1..a5d0c87 100644
--- a/src/con_.h
+++ b/src/con_.h
@@ -1,4 +1,4 @@
-/* XXX: THIS FILE SHOULD BE CALLED `con.h` BUT WINDOWS IS STUPID */
+/* THIS FILE SHOULD BE CALLED `con.h` BUT WINDOWS IS STUPID */
 /*
  * Copyright © 2022 Michael Smith <mikesmiffy128@gmail.com>
  *
@@ -40,7 +40,7 @@ struct con_cmdargs {
 	const char *argv[CON_CMD_MAX_ARGC];
 };
 
-/* an ARGB colour, passed to con_colourmsg */
+/* an RGBA colour, passed to con_colourmsg */
 struct con_colour {
 	union {
 		struct { u8 r, g, b, a; };
@@ -236,7 +236,11 @@ extern void *_con_vtab_iconvar[];
 		.parent = &_cvar_##name_, /* bizarre, but how the engine does it */ \
 		.defaultval = _Generic(value, char *: value, int: #value, \
 				float: #value), \
-		.strlen = _Generic(value, char *: sizeof(value), \
+		/* N.B. the NOLINT comment below isn't for you, the reader, it's for the
+		   computer, because clangd decided the only way to turn off a bogus
+		   warning is to write a bogus comment. Also note, this comment you're
+		   reading now isn't very useful either, I'm just angry. */ \
+		.strlen = _Generic(value, char *: sizeof(value), /*NOLINT*/ \
 				default: sizeof(#value)), \
 		.fval = _Generic(value, char *: 0, int: value, float: value), \
 		.ival = _Generic(value, char *: 0, int: value, float: (int)value), \