tidy display of config
utilities for accessing entities behind subnets
more fixes for bug where app parented by app reports itself as the master
(specifically where added using new style syntax, after creation)
more logging
completion of CIDR computation, and bit manipulation library
Merge remote-tracking branch 'central/master' into fix/subnets-and-config

Conflicts:
	software/database/src/main/java/brooklyn/entity/database/mysql/MySqlSshDriver.groovy
            (minor blank string check, in local branch, already applied in master (moved to java))
addressed code review comments
Nginx: add proxy_set_header X-Forwarded-For and X-Real-IP
Disable RubyRepIntegrationTest.test_localhost_postgres

- Because failing in jenkins, preventing us seeing what errors there 
  are in integration tests in subsequent modules.
- Needs to be re-enabled again later!
fixes to code review comments
Merge pull request #559 from ahgittin/fix/subnets-and-config

fix/subnets and config
nginx install: add --with-ld-opt and --with-cc-opt
Merge pull request #567 from aledsage/fix/Nginx

Fix nginx (for rhel and wordpress problems)
Remove deprecated code

- Remove some deprecated code marked as "will be deleted in 0.5"
- Change some others to "deprecated since 0.4", so we'll delete it in 0.6