fix bash compiling errors with gcc 4.8 under ubuntu 13.04

Change-Id: Ib1d55efac7678171dba9cc8ce39c556ba77a7bee
Signed-off-by: Dan Trifan <jimsth@gmail.com>
(cherry picked from commit d953d368af527c1b60f98dfbb16717e65371e13e)

Conflicts:
	lib/sh/unicode.c