Add start of extension for incremental integrity-checks to ext/intck/.
FossilOrigin-Name: 444e3c9210026da7eae1ed98850722e002433aa2cc77dbc6b6f80327a6b7a390
D
dan committed
99a94a124c6ff0b0428fa6ff7e880443edef8dcb
Parent: 6161cdd