* Merge from debian unstable.  Remaining changes:
  - debian/{control, rules}: Enable PIE hardening.
  - debian/{control, rules, apache2.2-common.ufw.profile}: Add ufw profiles.
  - debian/control: Add bzr tag and point it to our tree.
  - debian/apache2-2.common.apache2.init: Add graceful restart (LP: #456381)
  + Dropped:
    - debian/patches/206-fix-potential-memory-leaks.dpatch: No longer needed.
    - debian/patches/206-report-max-client-mpm-worker.dpatch: No longer needed.
    - debian/config-dir/apache2.conf: Merged back from debian.
    - mod-reqtimeout functionality: Merge back from debian.
    - debian/patches/204_CVE-2010-0408.dpatch: No longer needed.
    - debian/patches/205_CVE-2010-0434.dpatch: No longer needed.
    - debian/patches/203_fix-ab-segfault.dpatch: No longer needed.