(PUP-1284) Return SID correctly for Authenticated Users

When returning the SID for authenticated users (and a couple of other users),
the SID is returned incorrectly as S-1-5-0 (should be S-1-5-11). This is due to
stripping the SID instead of shortening the SID with GetSIDLength. Certain
characters (ASCII 11) look like whitespace and the way win32-security gem works
in the current version is to strip that off, returning an incorrect SID.

This provides a fix until we upgrade win32-security gem.

Details at https://github.com/djberg96/win32-security/issues/3
Merge remote-tracking branch 'rob/ticket/1.9.3/PUP-1284_handle_authenticated_users' into 1.9.3

* rob/ticket/1.9.3/PUP-1284_handle_authenticated_users:
  (PUP-1284) Return SID correctly for Authenticated Users
(PE-3180) win32-security SID buffer size too small

 - When calling Windows::Security::SID.new('foo'), the SID of user 'foo'
   is looked up with the Win32 API call LookupAccountSid.  Unfortunately
   the win32-security gem hardcodes a fixed size buffer which is too
   small for the returned SID under certain circumstances (for domain
   SIDs for instance).  Idiomatic Win32 API states that the first API
   call should be used to determine a buffer size, a buffer should then
   be allocated, and then a subsequent call should be made to the Win32
   API with the appropriate buffer.
 - Being 'more correct' would be a larger code change, so instead the
   simplest approach here is to bump up the buffer size appropriately.
 - Note that the version of win32-security we're presently using is
   > 1 year old, and we do have plans to replace it with a safer 0.2.5+
   version that uses FFI and follows safeer practices around calling
   Win32 APIs.  However, at this time, this requires some more
   involved code changes that may be too large for a bugfix release.
(RE-1438) Rebuilt ruby against updated libyaml 0.1.6
Merge pull request #27 from haus/1.9.3

(RE-1438) Rebuilt ruby against updated libyaml 0.1.6
Merge pull request #26 from Iristyle/ticket/1.9.3/PE-3180-win32-security-sid-data-area-too-small

(PE-3180) win32-security SID buffer size too small