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/awk/lib.c

@@ -435,7 +435,7 @@ int refldbld(char *rec, char *fs)	/* build fields from reg expr in FS */
 			break;
 		}
 	}
-	return i;		
+	return i;
 }
 
 void recbld(void)	/* create $0 from $1..$NF if necessary */
@@ -715,4 +715,3 @@ int is_number(char *s)
 	else
 		return 0;
 }
-