* libultra/libc cleanup

* Format

* Correct prototype for strchr

* Different prototypes for bzero, bcmp, bcopy under __GNUC__ to match builtin prototypes

* Correct alloca prototype

* memmove

* strcpy

* strcmp

* memset

* fmodf

* fix some missing includes

* Remove libc header dependencies on libultra

* fix

* review

* internal_rsp; move size_t and NULL to ultratypes.h

* guint.h

* Move system variables to os_system.h

* controller, pi and vi

* osint.h

* piint.h

* siint, ucode, viint, voiceinternal

* Remove remaining variables from variables.h

* format

* final renames

* bss

* review

* review

* Delete unused headers

* Move PR and io to ultra64

* move headers to ultra64

* more cleanups

* more reorganizing

* i think that should be all

* format

* ifdef guards cleanup

* Add IO_READ and IO_WRITE macros for future use

* warnings

* review

Co-authored-by: Tharo <17233964+Thar0@users.noreply.github.com>

* warnings again

* warn

* ifdef guards

* fix merge

* fix merge

* fix merge

* bss

* padutils.h

* bss

* bss

* bss

* fix merge

* bss

* bss

* bss

* fix merge

* fixes

* fixes

* bss

* bss

* fix merge

* fix

* fix

* fix includepaths

* fix paths

* bss

* fix

* ultra64/ -> PR/

* header guards

* fix ehader guards

* fix

* fix++

* format

* bss is borken

* prevent 2

* :despair:

* bss

* rename assert to dbg_hungup

* fix

* a

* fix

* bss

* fix

* bss

* bss

---------

Co-authored-by: Tharo <17233964+Thar0@users.noreply.github.com>

* Move headers to include/libc

* stddef

* move math.h

* General cleanup

* move fabs, sqrtf and sqrt to math.h

* move alloca and assert

* whoops