Actor Struct Changes (and a few related things) (#617)

* reformat header

* type -> category

* done for now i think

* some more stuff

* first -> head

* focus

* flag comment

* ground -> floor

* remove asm, name wrapper funcs

* name func, format

* review

* targetPriority, format

* git subrepo pull --force tools/ZAPD

subrepo:
  subdir:   "tools/ZAPD"
  merged:   "0305ec2c2"
upstream:
  origin:   "https://github.com/zeldaret/ZAPD.git"
  branch:   "master"
  commit:   "0305ec2c2"
git-subrepo:
  version:  "0.4.3"
  origin:   "https://github.com/ingydotnet/git-subrepo.git"
  commit:   "2f68596"

* comment

* review

* feet flags

* horse shadow

include/z64camera.h

@@ -677,9 +677,9 @@ typedef struct {
  * & 0x00FF = atInitFlags
  * & 0xFF00 = eyeInitFlags
  * 0x1: Direct Copy of atTargetInit
- *      if initFlags & 0x6060: use posRot2 for focus point
+ *      if initFlags & 0x6060: use head for focus point
  * 0x2: Add atTargetInit to view's lookAt
- *      if initFlags & 0x6060: use posRot for focus point
+ *      if initFlags & 0x6060: use world for focus point
  * 0x3: Add atTargetInit to camera's at
  * 0x4: Don't update targets? 
  * 0x8: flag to use atTagetInit as f32 pitch, yaw, r