samba and samba4 security, bug fix, and enhancement update

ipa
[4.2.0-15.0.1.6.1]

• Drop redhat-access-plugin-ipa requires for OL7
  Blank out header-logo.png product-name.png
  Replace login-screen-logo.png [20362818]
  [4.2.0-15.6.1]
• Rebuild against newer Samba version
• Related: #1322690
  libldb
  [1.1.25-1]
• Rebase libldb to 1.1.25
• Related: rhbz#1322690
  libtalloc
  [2.1.5-1]
• Rebase to libtalloc 2.1.5
• Related: rhbz#1322690
  libtdb
  [1.3.8-1]
• Rebase libtdb to 1.3.8
• Related: rhbz#1322690
  libtevent
  [0.9.26-1]
• Rebase libtevent to 0.9.26
• Related: rhbz#1322690
  openchange
  [2.0-10]
• Add a patch to fix connection string (Related: #1322690)
  samba
  [4.2.10-6]
• Fix domain member winbind not being able to talk to trusted domains’ DCs
• relates: #1322690
  [4.2.10-5]
• Fix crash in smb.conf processing
• relates: #1322690
  [4.2.10-4]
• Fix LDAP SASL bind with arcfour-hmac-md5
• resolves: #1322690
  [4.2.10-3]
• Make sure the package owns /var/lib/samba and uses it for cache purposes
• resolves: #1322690
  [4.2.10-2]
• Remove ldb modules and internal libraries for DC when not packaging DC build
• resolves: #1322690
  [4.2.10-1]
• resolves: #1322690