add an explanation and fix a typo

 Changes between 0.9.6e and 0.9.7  [XX xxx 2002]

  *) Add cipher selection rules COMPLEMENTOFALL and COMPLENENTOFDEFAULT

  *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT

     to allow version independent disabling of normally unselected ciphers,

     which may be activated as a side-effect of selecting a single cipher.

     (E.g., cipher list string "RSA" enables ciphersuites that are left

     out of "ALL" because they do not provide symmetric encryption.

     "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)

     [Lutz Jaenicke, Bodo Moeller]

  *) Add appropriate support for separate platform-dependent build