eliminate GamePath saving when not nessasary; prevent iOS debug problem, and makes the cfg more portable

palcfg.c

@@ -458,11 +458,11 @@ PAL_SaveConfig(
 		sprintf(buf, "%s=%s\n", PAL_ConfigName(PALCFG_MUSIC), music_types[gConfig.eMusicType]); fputs(buf, fp);
 		sprintf(buf, "%s=%s\n", PAL_ConfigName(PALCFG_OPL), opl_types[gConfig.eOPLType]); fputs(buf, fp);
 
-		if (gConfig.pszGamePath) { sprintf(buf, "%s=%s\n", PAL_ConfigName(PALCFG_GAMEPATH), gConfig.pszGamePath); fputs(buf, fp); }
-		if (gConfig.pszSavePath) { sprintf(buf, "%s=%s\n", PAL_ConfigName(PALCFG_SAVEPATH), gConfig.pszSavePath); fputs(buf, fp); }
-		if (gConfig.pszMsgFile) { sprintf(buf, "%s=%s\n", PAL_ConfigName(PALCFG_MESSAGEFILE), gConfig.pszMsgFile); fputs(buf, fp); }
-		if (gConfig.pszBdfFile) { sprintf(buf, "%s=%s\n", PAL_ConfigName(PALCFG_BDFFILE), gConfig.pszBdfFile); fputs(buf, fp); }
-		if (gConfig.pszCLIMIDIPlayerPath) { sprintf(buf, "%s=%s\n", PAL_ConfigName(PALCFG_CLIMIDIPLAYER), gConfig.pszCLIMIDIPlayerPath); fputs(buf, fp); }
+		if (gConfig.pszGamePath && *gConfig.pszGamePath && strncmp(gConfig.pszGamePath, PAL_PREFIX, strnlen(gConfig.pszGamePath,PATH_MAX)) != 0) { sprintf(buf, "%s=%s\n", PAL_ConfigName(PALCFG_GAMEPATH), gConfig.pszGamePath); fputs(buf, fp); }
+		if (gConfig.pszSavePath && *gConfig.pszSavePath && strncmp(gConfig.pszSavePath, PAL_SAVE_PREFIX, strnlen(gConfig.pszSavePath,PATH_MAX)) != 0) { sprintf(buf, "%s=%s\n", PAL_ConfigName(PALCFG_SAVEPATH), gConfig.pszSavePath); fputs(buf, fp); }
+		if (gConfig.pszMsgFile && *gConfig.pszMsgFile) { sprintf(buf, "%s=%s\n", PAL_ConfigName(PALCFG_MESSAGEFILE), gConfig.pszMsgFile); fputs(buf, fp); }
+		if (gConfig.pszBdfFile && *gConfig.pszBdfFile) { sprintf(buf, "%s=%s\n", PAL_ConfigName(PALCFG_BDFFILE), gConfig.pszBdfFile); fputs(buf, fp); }
+		if (gConfig.pszCLIMIDIPlayerPath && *gConfig.pszCLIMIDIPlayerPath) { sprintf(buf, "%s=%s\n", PAL_ConfigName(PALCFG_CLIMIDIPLAYER), gConfig.pszCLIMIDIPlayerPath); fputs(buf, fp); }
 
 		fclose(fp);