Add unit tests for the CuckooCache

SQUASHME: Update Tests for other SQUASHMEs

Author: JeremyRubin

src/Makefile.test.include

@@ -54,6 +54,7 @@ BITCOIN_TESTS =\
   test/coins_tests.cpp \
   test/compress_tests.cpp \
   test/crypto_tests.cpp \
+  test/cuckoocache_tests.cpp \
   test/DoS_tests.cpp \
   test/getarg_tests.cpp \
   test/hash_tests.cpp \