Remote whitespace at the ends of lines. Remove blank lines from the ends of files. Change modes on source files so that they are not executable. Signed-off-by: Dan Cross <cross@gajendra.net>

decode.c:146:8: warning: variable ‘argv’ set but not used fs.c:953:47: warning: variable ‘reset’ set but not used imap.c:348:6: warning: variable ‘prefix’ set but not used Updates #114.

R=rsc CC=plan9port.codebot http://codereview.appspot.com/5429044

list message 1. give correct contents for raw, rawheader, rawbody. provide filename and charset in mime attachments. only rename mailboxes named mbox* not mbox*.