Add more script edge condition tests.

This commit adds some tests to the script_valid.json and tx_invalid.json
data which exercise more edge conditions that are not currently being
tested.

src/test/data/script_valid.json

@@ -74,12 +74,14 @@
 
 ["1 1", "VERIFY", "P2SH,STRICTENC"],
 ["1 0x05 0x01 0x00 0x00 0x00 0x00", "VERIFY", "P2SH,STRICTENC", "values >4 bytes can be cast to boolean"],
+["1 0x01 0x80", "IF 0 ENDIF", "P2SH,STRICTENC", "negative 0 is false"],
 
 ["10 0 11 TOALTSTACK DROP FROMALTSTACK", "ADD 21 EQUAL", "P2SH,STRICTENC"],
 ["'gavin_was_here' TOALTSTACK 11 FROMALTSTACK", "'gavin_was_here' EQUALVERIFY 11 EQUAL", "P2SH,STRICTENC"],
 
 ["0 IFDUP", "DEPTH 1 EQUALVERIFY 0 EQUAL", "P2SH,STRICTENC"],
 ["1 IFDUP", "DEPTH 2 EQUALVERIFY 1 EQUALVERIFY 1 EQUAL", "P2SH,STRICTENC"],
+["0x05 0x0100000000 IFDUP", "DEPTH 2 EQUALVERIFY 0x05 0x0100000000 EQUAL", "P2SH,STRICTENC", "IFDUP dups non ints"],
 ["0 DROP", "DEPTH 0 EQUAL", "P2SH,STRICTENC"],
 ["0", "DUP 1 ADD 1 EQUALVERIFY 0 EQUAL", "P2SH,STRICTENC"],
 ["0 1", "NIP", "P2SH,STRICTENC"],
@@ -408,6 +410,7 @@
 
 ["0 0", "EQUAL", "P2SH,STRICTENC"],
 ["0 0", "EQUALVERIFY 1", "P2SH,STRICTENC"],
+["0 0 1", "EQUAL EQUAL", "P2SH,STRICTENC", "OP_0 and bools must have identical byte representations"],
 
 ["0", "1ADD", "P2SH,STRICTENC"],
 ["2", "1SUB", "P2SH,STRICTENC"],

src/test/data/tx_invalid.json

@@ -19,6 +19,12 @@
 [[["0000000000000000000000000000000000000000000000000000000000000100", 0, "DUP HASH160 0x14 0x5b6462475454710f3c22f5fdf0b40704c92f25c3 EQUALVERIFY CHECKSIGVERIFY 1 0x4c 0x47 0x3044022067288ea50aa799543a536ff9306f8e1cba05b9c6b10951175b924f96732555ed022026d7b5265f38d21541519e4a1e55044d5b9e17e15cdbaf29ae3792e99e883e7a01"]],
 "01000000010001000000000000000000000000000000000000000000000000000000000000000000006b4c473044022067288ea50aa799543a536ff9306f8e1cba05b9c6b10951175b924f96732555ed022026d7b5265f38d21541519e4a1e55044d5b9e17e15cdbaf29ae3792e99e883e7a012103ba8c8b86dea131c22ab967e6dd99bdae8eff7a1f75a2c35f1f944109e3fe5e22ffffffff010000000000000000015100000000", "P2SH"],
 
+["This is the nearly-standard transaction with CHECKSIGVERIFY 1 instead of CHECKSIG from tx_valid.json"],
+["but with the signature duplicated in the scriptPubKey with a different hashtype suffix"],
+["See FindAndDelete, which will only remove if the signature, including the hash type, matches"],
+[[["0000000000000000000000000000000000000000000000000000000000000100", 0, "DUP HASH160 0x14 0x5b6462475454710f3c22f5fdf0b40704c92f25c3 EQUALVERIFY CHECKSIGVERIFY 1 0x47 0x3044022067288ea50aa799543a536ff9306f8e1cba05b9c6b10951175b924f96732555ed022026d7b5265f38d21541519e4a1e55044d5b9e17e15cdbaf29ae3792e99e883e7a81"]],
+"01000000010001000000000000000000000000000000000000000000000000000000000000000000006a473044022067288ea50aa799543a536ff9306f8e1cba05b9c6b10951175b924f96732555ed022026d7b5265f38d21541519e4a1e55044d5b9e17e15cdbaf29ae3792e99e883e7a012103ba8c8b86dea131c22ab967e6dd99bdae8eff7a1f75a2c35f1f944109e3fe5e22ffffffff010000000000000000015100000000", "P2SH"],
+
 ["An invalid P2SH Transaction"],
 [[["0000000000000000000000000000000000000000000000000000000000000100", 0, "HASH160 0x14 0x7a052c840ba73af26755de42cf01cc9e0a49fef0 EQUAL"]],
 "010000000100010000000000000000000000000000000000000000000000000000000000000000000009085768617420697320ffffffff010000000000000000015100000000", "P2SH"],