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/libregexp/lib9.std.h

@@ -8,4 +8,3 @@
 #define	exits(x)	exit(x && *x ? 1 : 0)
 
 #define	nil	0
-

src/libregexp/regcomp.c

@@ -109,7 +109,7 @@ regerr2(char *s, int c)
 	while(*s)
 		*cp++ = *s++;
 	*cp++ = c;
-	*cp = '\0'; 
+	*cp = '\0';
 	rcerror(buf);
 }