Changes to adapter + gyp to support v15

Bug: b/117558570
Test: Android, CE CDM, and Linux tests
Merge of http://go/wvgerrit/67566

This CL adds changes to support the Level 3 upgrade to v15 with both the
dynamic and static adapters. It also rearranges the wvcrc.cpp files so
that the tests have their own copy and Level 3 can just use the one in
ref/src.

Change-Id: Ieee2859601881aa1800622454e6ce0345eb94aa7

libwvdrmengine/oemcrypto/test/oemcrypto_test.cpp

@@ -2018,7 +2018,7 @@ class OEMCryptoSessionTestsDecryptTests
     EXPECT_EQ(unencryptedData, output_buffer);
     if (global_features.supports_crc) {
       uint32_t hash =
-          wvcrc32(&unencryptedData[0], unencryptedData.size());
+          wvoec::wvcrc32(&unencryptedData[0], unencryptedData.size());
       ASSERT_EQ(OEMCrypto_SUCCESS,
                 OEMCrypto_SetDecryptHash(
                     s.session_id(), 1, reinterpret_cast<const uint8_t*>(&hash),