Text input: Clearly use 16-bit chars like the PSP, don't rely on wchar_t.

Common/ChunkFile.cpp

@@ -117,6 +117,19 @@ void PointerWrap::Do(std::wstring &x) {
 	(*ptr) += stringLen;
 }
 
+void PointerWrap::Do(std::u16string &x) {
+	int stringLen = sizeof(char16_t) * ((int)x.length() + 1);
+	Do(stringLen);
+
+	switch (mode) {
+	case MODE_READ: x = (char16_t*)*ptr; break;
+	case MODE_WRITE: memcpy(*ptr, x.c_str(), stringLen); break;
+	case MODE_MEASURE: break;
+	case MODE_VERIFY: _dbg_assert_msg_(COMMON, x == (char16_t*)*ptr, "Savestate verification failure: (at %p).\n", x.c_str()); break;
+	}
+	(*ptr) += stringLen;
+}
+
 struct standard_tm {
 	int tm_sec;
 	int tm_min;