Upstream changes:
The version 1.71
1. Fixed the REAL*8 and INTEGER*4 occurences in accordance with Kurt's email.
The version 1.73
1. changed occurences of unix.time to system.time in accordance with Kurt's
directive.
The version 1.74
1. One more unix -> system
The version 1.75
1. package -> PACKAGE [per Kurt's email of 3/2/17]
The version 1.76
1. Used package_native_routine_registration_skeleton to remove
PACKAGE = SparseM [per Kurt's email of 3/2/17]
The version 1.77
1. Changed setMethod for diag (matrix.csr) in accordance with MM's suggestion
2. removed setGeneric for image also suggested by MM.
