Mirror pokeemerald PR#1329 & PR#1335 to pokefirered

The `giftRibbons` field in `SaveBlock1` has been split out into proper subfields. The new ExternalEvent structs deal with interconnectivity between external games/peripherals and FRLG. US & JP Colosseum Bonus Discs', Colosseum and XD's, Pokémon Channel's, and PokémonBox: Ruby & Sapphire's interactions with these fields has been documented.

The `giftRibbon#` fields in `PokemonSubstruct3` have also been renamed to their appropriate ribbons, and commented with distribution info if applicable. The previous `fatefulEncounter` field was actually filler, and relabeled as such, while the `obedient` bit was renamed `eventLegal`. All relevant constants and functions dealing with the Pokémon data structure were renamed with these changes in mind.

I still maintain that `eventLegal` is a misnomer and it should be called `fatefulEncounter` in all three repos.

include/constants/pokemon.h

@@ -74,15 +74,15 @@
 #define MON_DATA_VICTORY_RIBBON    69
 #define MON_DATA_ARTIST_RIBBON     70
 #define MON_DATA_EFFORT_RIBBON     71
-#define MON_DATA_GIFT_RIBBON_1     72
-#define MON_DATA_GIFT_RIBBON_2     73
-#define MON_DATA_GIFT_RIBBON_3     74
-#define MON_DATA_GIFT_RIBBON_4     75
-#define MON_DATA_GIFT_RIBBON_5     76
-#define MON_DATA_GIFT_RIBBON_6     77
-#define MON_DATA_GIFT_RIBBON_7     78
-#define MON_DATA_FATEFUL_ENCOUNTER 79
-#define MON_DATA_OBEDIENCE         80
+#define MON_DATA_MARINE_RIBBON     72
+#define MON_DATA_LAND_RIBBON       73
+#define MON_DATA_SKY_RIBBON        74
+#define MON_DATA_COUNTRY_RIBBON    75
+#define MON_DATA_NATIONAL_RIBBON   76
+#define MON_DATA_EARTH_RIBBON      77
+#define MON_DATA_WORLD_RIBBON      78
+#define MON_DATA_FILLER            79
+#define MON_DATA_EVENT_LEGAL       80
 #define MON_DATA_KNOWN_MOVES       81
 #define MON_DATA_RIBBON_COUNT      82
 #define MON_DATA_RIBBONS           83