cracklib: fix default dictionary should be generated for target endianness

The previous dict files are NOT byte-order independent, in fact they are
probably ARCHITECTURE SPECIFIC.
Create the dict files in big endian, and convert to host endian while
load them. This could fix the endian issue on multiple platform.

[Bug #4419]

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
craklib:fix testnum and teststr failed

Error log:
...
$ ./testnum
(null).pwd.gz: No such file or directory
PWOpen: No such file or directory

$ ./util/teststr
(null).pwd.gz: No such file or directory
PWOpen: No such file or directory
...

Set DEFAULT_CRACKLIB_DICT as the path of  PWOpen

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>