Including more patches from bug-bash

- pcomplete-dequote.patch from http://lists.gnu.org/archive/html/bug-bash/2014-03/msg00032.html
- parse-ansi-expand.patch from http://lists.gnu.org/archive/html/bug-bash/2014-03/msg00040.html
- compound-array-empty-value.patch from http://lists.gnu.org/archive/html/bug-bash/2014-03/msg00099.html