[headers 9] Add src/libc64/ and new "z64" rand.h (#2164)

* rand.h -> libc64/qrand.h

* Add rand.h with z64 rand wrappers

* yeet comment

* code/rand.c -> libc64/qrand.c

* fixup

* move libc64 source to src/libc64/

* fix

* bss

* update file splits disasm metadata

tools/disasm/ntsc-1.2/files_code.csv

@@ -128,13 +128,13 @@ BBA50,800CD130,src/code/loadfragment2_n64
 BBF00,800CD5E0,src/code/padutils
 BC110,800CD7F0,src/code/code_800FC620
 BC530,800CDC10,src/code/padsetup
-BC670,800CDD50,src/code/fp_math
-BCA20,800CE100,src/code/fp
-BCB80,800CE260,src/code/system_malloc
-BCDF0,800CE4D0,src/code/rand
-BCEF0,800CE5D0,src/code/__osMalloc_n64
-BD8A0,800CEF80,src/boot/sprintf
-BD970,800CF050,src/code/printutils
+BC670,800CDD50,src/libc64/math64
+BCA20,800CE100,src/libc64/fp
+BCB80,800CE260,src/libc64/malloc
+BCDF0,800CE4D0,src/libc64/qrand
+BCEF0,800CE5D0,src/libc64/__osMalloc_n64
+BD8A0,800CEF80,src/libc64/sprintf
+BD970,800CF050,src/libc64/aprintf
 BD9D0,800CF0B0,src/code/jpegutils
 BDEE0,800CF5C0,src/code/jpegdecoder
 BE4D0,800CFBB0,src/libultra/os/getintmask
@@ -291,9 +291,9 @@ F3330,80104A10,src/audio/session_config
 F3AD0,801051B0,src/code/gfxprint
 F4380,80105A60,src/code/loadfragment2_n64
 F4390,80105A70,src/code/code_800FC620
-F43A0,80105A80,src/code/rand
-F43B0,80105A90,src/code/__osMalloc_n64
-F43C0,80105AA0,src/boot/sprintf
+F43A0,80105A80,src/libc64/qrand
+F43B0,80105A90,src/libc64/__osMalloc_n64
+F43C0,80105AA0,src/libc64/sprintf
 F4400,80105AE0,src/libultra/gu/sins
 F4C00,801062E0,src/libultra/io/siacs
 F4C10,801062F0,src/libultra/io/controller
@@ -379,8 +379,8 @@ F9180,8010A860,src/audio/session_config
 F9190,8010A870,src/code/gfxprint
 F91D0,8010A8B0,src/code/rcp_utils
 F9320,8010AA00,src/code/loadfragment2_n64
-F94C0,8010ABA0,src/code/fp_math
-F94E0,8010ABC0,src/code/__osMalloc_n64
+F94C0,8010ABA0,src/libc64/math64
+F94E0,8010ABC0,src/libc64/__osMalloc_n64
 F9690,8010AD70,src/libultra/gu/sinf
 F96E0,8010ADC0,src/libultra/gu/perspective
 F96F0,8010ADD0,src/libultra/gu/lookathil
@@ -449,7 +449,7 @@ offset,vram,.bss
 1139C0,801250A0,src/audio/sequence
 114780,80125E60,src/audio/data
 114820,80125F00,src/audio/session_config
-11AC90,8012C370,src/code/system_malloc
+11AC90,8012C370,src/libc64/malloc
 11ACA0,8012C380,src/code/jpegdecoder
 11ACB0,8012C390,src/libultra/io/sptask
 11ACF0,8012C3D0,src/libultra/io/motor