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>

ls: check that pointer is not nil before calling qsort Passing a null pointer to qsort is an error in C (GCC and Clang agree with the standards there, so this is no joke). Change-Id: Ia2b015793a75ea4e85ae8f47da6beead9c4290e6

cmd: rename *.C to *.c These were *.C back in 2003, before the 9 script, to avoid conflicts with the system utilities. A later change renamed them, but that change seems to have been lost during the hg->git conversion because I ran the conversion on a case-insensitive file system. Change-Id: Id32c99cb9571ef0e185c3cc9e8c8d6d5b48ca195