cleanup d_meter2_info / little JMessage work (#2460)

* d_meter2_info cleanup

* parseBlock_next matching

include/JSystem/JMessage/JMessage.h

@@ -0,0 +1,41 @@
+#ifndef JMESSAGE_H
+#define JMESSAGE_H
+
+#include <dolphin.h>
+
+// Struct definitions might be wrong
+typedef struct bmg_header_t {
+    /* 0x00 */ char magic[8];            // "MESGbmg1"
+    /* 0x08 */ u32 size;                 // total size of file not including FLW1/FLI1 sections
+    /* 0x0C */ u32 n_sections;           // number of sections
+    /* 0x10 */ u8 encoding;              // text encoding
+    /* 0x11 */ u8 padding[0x20 - 0x11];  // padding
+} bmg_header_t;
+
+typedef struct bmg_section_t {
+    /* 0x0 */ u32 magic;  // four character magic string
+    /* 0x4 */ u32 size;   // total size of the section
+} bmg_section_t;
+
+typedef struct inf1_entry_t {
+    /* 0x0 */ u32 string_offset;      // offset into DAT1 section entries, pointing to where message text starts
+    /* 0x4 */ // attributes           // attribute data. size fills up the rest of defined INF1 "entry_size"
+} inf1_entry_t;
+
+typedef struct inf1_section_t {
+    /* 0x00 */ bmg_section_t header;  // section header
+    /* 0x08 */ u16 entry_num;         // number of entries in this section
+    /* 0x0A */ u16 entry_size;        // size of an entry
+    /* 0x0C */ u8 padding[4];         // padding
+} inf1_section_t;
+
+typedef struct str1_entry_t {
+    char str[0];
+} str1_entry_t;
+
+typedef struct str1_section_t {
+    /* 0x00 */ bmg_section_t header;  // section header
+    /* 0x08 */ str1_entry_t entries[0];
+} str1_section_t;
+
+#endif /* JMESSAGE_H */