Annotate xxHash deps (facebookincubator#12092)

Summary:
Pull Request resolved: facebookincubator#12092

Annotate xxHash includes for better attribution.

Differential Revision: D68215873

fbshipit-source-id: d6349ee7e32047ec0a2e73c8a2f2ba63632e1652

Author: ryanthomasjohnson

velox/exec/HashPartitionFunction.cpp

@@ -17,7 +17,7 @@
 #include <velox/exec/VectorHasher.h>
 
 #define XXH_INLINE_ALL
-#include <xxhash.h>
+#include <xxhash.h> // @manual=third-party//xxHash:xxhash
 
 namespace facebook::velox::exec {
 namespace {

velox/functions/prestosql/aggregates/ApproxDistinctAggregate.cpp

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 #define XXH_INLINE_ALL
-#include <xxhash.h>
+#include <xxhash.h> // @manual=third-party//xxHash:xxhash
 
 #include "velox/common/hyperloglog/DenseHll.h"
 #include "velox/common/hyperloglog/HllUtils.h"

velox/functions/prestosql/aggregates/ChecksumAggregate.cpp

@@ -15,7 +15,7 @@
  */
 
 #define XXH_INLINE_ALL
-#include <xxhash.h>
+#include <xxhash.h> // @manual=third-party//xxHash:xxhash
 
 #include "velox/exec/Aggregate.h"
 #include "velox/expression/FunctionSignature.h"

velox/functions/prestosql/aggregates/PrestoHasher.cpp

@@ -18,7 +18,7 @@
 #include <type_traits>
 
 #define XXH_INLINE_ALL
-#include <xxhash.h>
+#include <xxhash.h> // @manual=third-party//xxHash:xxhash
 
 #include "velox/functions/lib/RowsTranslationUtil.h"
 #include "velox/functions/prestosql/types/IPAddressType.h"