*   Provided a new `experimental_skip_saver` argument which, if specified, will suppress the addition of `SavedModel`-native save and restore ops to the `SavedModel`, for cases where users already build custom save/restore ops and checkpoint formats for the model being saved, and the creation of the SavedModel-native save/restore ops simply cause longer model serialization times.

* Add ops to `tensorflow.raw_ops` that were missing.

// R = Z1*T1 VOR T0, T0, Y0 VOR T1, T1, Y1 CALL p256MulInternal<>(SB) VOR T0, T0, RL // SAVE: RL VOR T1, T1, RH // SAVE: RH STXVD2X RH, (R1)(R17) // V27 has to be saved // X=X2; Y- ; MUL; H=T // H = X2*T1 MOVD in2+16(FP), P2ptr LXVD2X (R0)(P2ptr), X0 // X2L LXVD2X (R16)(P2ptr), X1 // X2H XXPERMDI X0, X0, $2, X0 XXPERMDI X1, X1, $2, X1 CALL p256MulInternal<>(SB) VOR T0, T0, HL // SAVE: HL VOR T1, T1, HH // SAVE: HH // X=Z2; Y=Z2; MUL; T- // T2 = Z2*Z2 MOVD in2+16(FP), P2ptr LXVD2X (R19)(P2ptr), X0...

// R = Z1*T1 VOR T0, T0, Y0 VOR T1, T1, Y1 CALL p256MulInternal<>(SB) VOR T0, T0, RL // SAVE: RL VOR T1, T1, RH // SAVE: RH STXVD2X RH, (R1)(R17) // V27 has to be saved // X=X2; Y- ; MUL; H=T // H = X2*T1 MOVD in2+16(FP), P2ptr LXVD2X (R0)(P2ptr), X0 // X2L LXVD2X (R16)(P2ptr), X1 // X2H XXPERMDI X0, X0, $2, X0 XXPERMDI X1, X1, $2, X1 CALL p256MulInternal<>(SB) VOR T0, T0, HL // SAVE: HL VOR T1, T1, HH // SAVE: HH // X=Z2; Y=Z2; MUL; T- // T2 = Z2*Z2 MOVD in2+16(FP), P2ptr LXVD2X (R19)(P2ptr), X0...