Next step in #89: getDataPath everywhere in Run.java. checkEOL in FTP.

Basic.getDataPath in execute_gr_bitmap_load, writeBitmapToFile,
 execute_audio_load, execute_audio_record_start, executeFTP_GET and PUT,
 execute_SU_open, executeCONSOLE_DUMP, execute_SP_load, execute_html_load_url
checkEOL in execute_audio_record_start and execute_FTP* commands:
 OPEN, CLOSE, DIR, CD, GET, PUT, CMD, DELETE, RMDIR, MKDIR, RENAME
In execute_gr_bitmap_load: close stream on any exception
In writeBitmapToFile: simplify PNG vs. JPG, close stream on exception