metagen: simplify enum generation; reading/organization pass over raddbgi_from_pdb

src/os/gfx/generated/os_gfx.meta.h

@@ -151,7 +151,7 @@ OS_Key_Num9,
 OS_Key_LeftMouseButton,
 OS_Key_MiddleMouseButton,
 OS_Key_RightMouseButton,
-OS_Key_COUNT
+OS_Key_COUNT,
 } OS_Key;
 
 String8 os_g_key_display_string_table[] =

src/os/gfx/os_gfx.mdesk

@@ -155,11 +155,10 @@ OS_KeyTable:
 ////////////////////////////////
 //~ rjf: Generators
 
-@table_gen_enum
-OS_Key:
+@enum OS_Key:
 {
-  @expand(OS_KeyTable a) `OS_Key_$(a.name),`;
-  `OS_Key_COUNT`;
+  @expand(OS_KeyTable a) `$(a.name)`,
+  COUNT,
 }
 
 @table_gen_data(type: String8, fallback:`{0}`)