Trivial changes: whitespace and modes. 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>

Change _p9strsig to return nil if tmp==nil. Add atoi, atol, atoll. These versions call strtol/strtoll with base==0. The Unix versions use base==10.