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>

paint: add drawing program from 9front (#112) Paint first appeared in 9front. The 9front license is reproduced in the related source files - the original repository is located at https://code.9front.org/hg/plan9front.