MDEV-19522 InnoDB commit fails when FTS_DOC_ID value is greater than 4294967295
InnoDB commit fails when consecutive FTS_DOC_ID value is greater than 4294967295. Fix is that InnoDB should remove the delta FTS_DOC_ID value limitations and fts should encode 8 byte value, remove FTS_DOC_ID_MAX_STEP variable. Replaced the fts0vlc.ic file with fts0vlc.h fts_encode_int(): Should be able to encode 10 bytes value fts_get_encoded_len(): Should get the length of the value which has 10 bytes fts_decode_vlc(): Add debug assertion to verify the maximum length allowed is 10. mach_read_uint64_little_endian(): Reads 64 bit stored in little endian format Added a unit test case which check for minimum and maximum value to do the fts encoding
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