- Replace patches bash-4.2-heredoc-eof-delim.patch and
bash-4.2-parse-exportfunc.patch with the official upstream
patch levels bash42-052 and bash42-053

- Replace patch bash-4.2-CVE-2014-7187.patch with upstream patch
level bash42-051

- Make bash-4.2-extra-import-func.patch an optional patch due
instruction

- Remove and replace patches
bash-4.2-CVE-2014-6271.patch
bash-4.2-BSC898604.patch
bash-4.2-CVE-2014-7169.patch
with bash upstream patch 48, patch 49, and patch 50
- Add patch bash-4.2-extra-import-func.patch which is based on the
BSD patch of Christos. As further enhancements the option
import-functions is mentioned in the manual page and a shopt
switch is added to enable and disable import-functions on the fly