MDEV-22887 unresolved symbol crc32c_vpmsum on Ubuntu Xenial

This is one more follow-up fix to MDEV-22641.

Explicitly specify the dependency of the innobase library on mysys.

Also, remove stale references to CRC32_LIBRARY, which should have
been removed in commit dec3f8ca.

libmysqld/CMakeLists.txt

 # Copyright (c) 2006, 2011, Oracle and/or its affiliates.
-# Copyright (c) 2009, 2018, MariaDB Corporation
+# Copyright (c) 2009, 2020, MariaDB Corporation
 # 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -462,9 +462,8 @@ IF(NOT DISABLE_SHARED)
     # Clean direct output flags, as 2 targets have the same base name
     # libmysqld
     SET_TARGET_PROPERTIES(libmysqld PROPERTIES CLEAN_DIRECT_OUTPUT 1)
-    TARGET_LINK_LIBRARIES(libmysqld ${CRC32_LIBRARY})
     SET_TARGET_PROPERTIES(mysqlserver PROPERTIES CLEAN_DIRECT_OUTPUT 1)
-    TARGET_LINK_LIBRARIES(mysqlserver ${CRC32_LIBRARY} tpool)
+    TARGET_LINK_LIBRARIES(mysqlserver tpool)
     IF(LIBMYSQLD_SO_EXTRA_LIBS)
        TARGET_LINK_LIBRARIES(libmysqld ${LIBMYSQLD_SO_EXTRA_LIBS})
     ENDIF()

storage/innobase/CMakeLists.txt

@@ -363,7 +363,6 @@ MYSQL_ADD_PLUGIN(innobase ${INNOBASE_SOURCES} STORAGE_ENGINE
   DEFAULT RECOMPILE_FOR_EMBEDDED
   LINK_LIBRARIES
 	${ZLIB_LIBRARY}
-	${CRC32_LIBRARY}
 	${NUMA_LIBRARY}
 	${LIBSYSTEMD}
 	${LINKER_SCRIPT}
@@ -405,6 +404,6 @@ IF(MSVC)
 ENDIF()
 
 IF(NOT (PLUGIN_INNOBASE STREQUAL DYNAMIC))
-  TARGET_LINK_LIBRARIES(innobase tpool)
+  TARGET_LINK_LIBRARIES(innobase tpool mysys)
   ADD_SUBDIRECTORY(${CMAKE_SOURCE_DIR}/extra/mariabackup ${CMAKE_BINARY_DIR}/extra/mariabackup)
 ENDIF()