Fixed do_install error:
| DEBUG: Executing shell function do_install
| cat: aclocal-copy/libtool.m4: No such file or directory
| cat: aclocal-copy/lt~obsolete.m4: No such file or directory
| cat: aclocal-copy/ltoptions.m4: No such file or directory
| cat: aclocal-copy/ltsugar.m4: No such file or directory
| cat: aclocal-copy/ltversion.m4: No such file or directory
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>