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>

src/cmd/gzip/gunzip.c

@@ -348,7 +348,7 @@ error(char *fmt, ...)
 		vfprint(2, fmt, arg);
 		va_end(arg);
 		fprint(2, "\n");
-	
+
 		if(delfile != nil){
 			fprint(2, "gunzip: removing output file %s\n", delfile);
 			remove(delfile);

src/cmd/gzip/zip.c

@@ -136,7 +136,7 @@ zip(Biobuf *bout, char *file, int stdout)
 	zh->madevers = (2 * 10) + 0;
 	zh->extos = ZDos;
 	zh->extvers = (2 * 10) + 0;
-	
+
 	t = localtime(dir->mtime);
 	zh->modtime = (t->hour<<11) | (t->min<<5) | (t->sec>>1);
 	zh->moddate = ((t->year-80)<<9) | ((t->mon+1)<<5) | t->mday;