Initial v17 Release

Headers and Unit tests have been updated to match the v17 spec.

Documentation can be found here:
https://developers.devsite.corp.google.com/widevine/drm/client/oemcrypto/v17

util/include/disallow_copy_and_assign.h

@@ -5,12 +5,12 @@
 #ifndef WVCDM_UTIL_DISALLOW_COPY_AND_ASSIGN_H_
 #define WVCDM_UTIL_DISALLOW_COPY_AND_ASSIGN_H_
 
-namespace wvcdm {
+namespace wvutil {
 
 #define CORE_DISALLOW_COPY_AND_ASSIGN(TypeName) \
   TypeName(const TypeName&);                    \
   void operator=(const TypeName&)
 
-}  // namespace wvcdm
+}  // namespace wvutil
 
 #endif  //  WVCDM_UTIL_DISALLOW_COPY_AND_ASSIGN_H_