XD-2033 Moving ConnectionPoolSettings to own section
Pluralize xd config name in logging
XD-2038 Restore JDK6 compatibility

Avoid JDK7+ methods:
- Long.compare(x,y) in ZooKeeperContainerRepository
- Integer.compare(x,y) in ModuleDescriptor
- Collections.emptyIterator() in ChildPathIterator

Avoid this JDK7+ constant:
- PasswordUtils.UNICODE_CHARACTER_CLASS in PasswordUtils
XD-2025 Update config settings in spring-xd-yarn server.yml

- updating to match match current XD servers.yml

- moving ConnectionPoolSettings to own section

- adding a modules-config.zip as the module configuration option
Update README to 1.0 GA
XD-1799 - Fix ArrayIndexOutOfBoundsException in TwitterSearchChannelAdapter
XD-1799 fixed error message