drush 7.x-4.2

Changes since DRUPAL-7--4-1:

• Add example alias 'cli-update' to examples/example.bashrc
• Use '.bash_aliases' rather than '.bash_customizations' in examples
• Make 'builtin' test in core-cli more resiliant on platforms such as Debian where sh is dash instead of bash by default
• #511690 by webchick. better error msg when uid=0 is missing.
• #1026162 by Sutharsan. Recover from wget timeout when downloading Console Table.
• #1033298 by greg.1.anderson: Make drush core-cli "rsync" command contextual based on arguments
• #1029124 by greg.1.anderson: Private file system path should not be reported unless configured
• #1033380 by jonhattan: fix some php 5.3 warnings.
• #1035706 by jonhattan: remove translations support for pm-download. l10n_update is the recommended way.
• #1035846 by greg.1.anderson: --create-db SQL was not quoted correctly for mysql when user contained non-alpha characters
• Small internal refactor of pm-download so we can unit test the release XML handling.
• Do not copy #hidden from a parent alias record
• #1039844 by greg.1.anderson: core-cli cd fix for paths with spaces
• Don't include #hidden in output of sa --full
• #1039904 by greg.1.anderson: bash aliases for drush aliases
• #1040052 by greg.1.anderson: fix self alias caching
• Deprecate drush_backend_invoke_args in favor of drush_backend_invoke_sitealias
• Make drush_unset_recursive a little more resiliant to bad input
• Document drush_dependencies for sql-sync and site-upgrade.
• #1019148 by jonhattan: Scape files in svn vc engine and properly return from cvs errors.
• #1043546 by thess. Specifying option --no-backup on pm-update causes update to fail with no error messages.
• #1041376 by moshe weitzman. --simulate does nothing for remote dispatches. Also lots of trailing whitespace removed.
• #1028550 by kotnick. Catastrophic failure in pm-download when there is no bootstrapped Drupal site and cwd == drush install dir.