Log Message:
Update to 0.90. From the changelog:

- Added support for chaining modules within the version client library.
  To use this, specify the module string as a list of modules separated
  with commas. For example:

	cvm-command:/path/to/module,cvm-local:/path/to/socket

  This enhancement deprecates the cvm-chain module.

- Introduced an "out of scope" fact, to be used on credential rejection
  results when the supplied credentials are outside of the scope of
  authority of the module. The cvm-vmailmgr and cvm-qmail modules
  report this fact as appropriate, and cvm-chain copies it as
  appropriate from the modules it invokes.

- A random anti-spoofing tag is added to all version 2 client requests.
  Its length is set by $CVM_RANDOM_BYTES and defaults to 8.

- Fixed a bug that caused the domain output to be set incorrectly when
  doing qmail lookups with a domain not in the control files with
  $CVM_QMAIL_ASSUME_LOCAL set.