* Make func_800C213C match original ROM
The C code for this function was very close to done, and was
functionally equivalent to the ROM. This commit uses a few tricks
to convince the compiler to allocate the same registers as the original
ROM. The two tricks used are:
1. Introduced a new temporary variable "yinc".
2. Added a "do while(0) {}" line in two places.
Both of these ideas came from the decomp-permuter tool. I took the
do/while idea and guess as to what it might have been in the original
code. I imagined that the "do while(0) {}" was probably left over from
a standard multi-line macro, which for some reason had an empty body.
I further suggest that maybe the empty body is because it was a feature
compiled out during RELEASE builds - perhaps a debug logging macro.
* Use simpler code for func_800C213C
Replaced dummy LOG macro with "do {} while(0);". This version makes
less assumptions about what the original code looked like.
* Decompile PreRender.c
* use NON_EQUIVALENT and run format.sh
* Get rid of some magic values
* rename dList/dListp to dListHead/dList
* make func_800C213C NON_MATCHING
* replace more values with SCREEN_WIDTH/SCREEN_HEIGHT
* dList/dListHead with gfxp/gfx
* Split files
* Format rodata
* Some more code rodata migrated
* Some more actor rodata migrated
* Migrate rodata for ovl_Boss_Ganon
* Migrate rodata for code_800EC960
* Remove unused rodata
* x1b occurences all lowercase b
