common: Fix AWK portability.
* common/Makefile.am: Use pkg_namespace. * common/mkstrtable.awk: Use pkg_namespace. Regexp fix.
Cherry-picked from master commit:
b6f0b0efa19e0434024bc16e246032b613fd448a
GnuPG-bug-Bug: 4459
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>