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>

This problem happens especially in fossil/view when vtread can be called even if not connected to venti. The old libventi handle this case properly in the function vtRPC, which is called by vtReadPacket (client.c). R=rsc CC=plan9port.codebot http://codereview.appspot.com/5484044

and one per-package memory leak (in writethread).