j2d / map_path work, d_drawlist / d_attention cleanup (#208)

* work on fop actor / actor mng, daalink, d_a_obj_item

* d_a_title mostly decompiled

* daalink / d_event / JMessage / dmsg_out_font work

* msg_scrn_base / msg_scrn_boss

* some work on mDo machine, d_menu_save, d_tresure, and various

* remove asm

* progress

* finish d_menu_save / d_pane_class_alpha / d_pane_class / rename some data

* rename more data

* remove asm / progress

* match all of d_pane_class

* fixes / some dKankyo doc

* bunch of j2d work. d_drawlist / d_attention cleanup

* progress / asm

* cleanup wip

* decompile JStage

* setup some more JStudio structs

* set up d_demo classes

* some d_demo work

* cleanup dolphin os stuff

* some initial dEvent documentation

* some At collision documentation

* match JUTConsole::doDraw

* dbgs work / split up some of d_a_alink into .inc files

* d_a_alink_spinner work

include/MSL_C/math.h

@@ -4,6 +4,10 @@
 #include "MSL_C/MSL_Common/Src/float.h"
 #include "dolphin/types.h"
 
+#define M_PI 3.14159265358979323846f
+
+#define DEG_TO_RAD(degrees) (degrees * (M_PI / 180.0f))
+
 #ifdef __cplusplus
 extern "C" {
 #endif