[GH #959] Updated integer native pbc test files

Updated only by pbc_header.pl
This change removes the following TODO warnings in the test suite:
  ok 1 - 4_le=>8_le i386 32 bit opcode_t, 4 byte intval, 8 byte double # TODO
t/native_pbc/integer_4_le.pbc has old v5.0.0. Try tools/dev/pbc_header.pl
--update-fingerprint t/native_pbc/integer_4_le.pbc
  ok 2 - 4_be=>8_le big-endian 32 bit opcode_t, 4 byte intval, 8 byte double #
TODO t/native_pbc/integer_4_be.pbc has old v5.0.0. Try
tools/dev/pbc_header.pl --update-fingerprint t/native_pbc/integer_4_be.pbc
  ok 3 - 8_le=>8_le x86_64 64 bit opcode_t, 8 byte intval, 8 byte double #
TODO t/native_pbc/integer_8_le.pbc has old v5.0.0. Try
tools/dev/pbc_header.pl --update-fingerprint t/native_pbc/integer_8_le.pbc