Undo PokeCodec's PRs

This commit undoes most of PokeCodec's PRs after the debate in chat. Some
harmless or completely superseded PRs have been left alone, as there is not
much benefit in attempting to undo them.

Reverts #1104, #1108, #1115, #1118, #1119, #1124, #1126, #1127, #1132, #1136,
#1137, #1139, #1140, #1144, #1148, #1149, #1150, #1153, #1155, #1177, #1179,
#1180, #1181, #1182 and #1183.

include/global.h

@@ -99,7 +99,7 @@
 #define T2_READ_PTR(ptr) (void*) T2_READ_32(ptr)
 
 // Macros for checking the joypad
-#define TEST_BUTTON(field, button) ((field) & (button))
+#define TEST_BUTTON(field, button) ({(field) & (button);})
 #define JOY_NEW(button) TEST_BUTTON(gMain.newKeys,  button)
 #define JOY_HELD(button)  TEST_BUTTON(gMain.heldKeys, button)
 #define JOY_HELD_RAW(button) TEST_BUTTON(gMain.heldKeysRaw, button)