Merge bitcoin#8895: Better SigCache Implementation

67dac4e Add unit tests for the CuckooCache (Jeremy Rubin)
c9e69fb Add CuckooCache implementation and replace the sigcache map_type with it (Jeremy Rubin)

Author: sipa

src/Makefile.test.include

@@ -59,6 +59,7 @@ 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/governance_validators_tests.cpp \