added MatSetUp calls to TS tutorials 16 and 21
TS tutorial: example has no embedded method so needs -ts_adapt_type none
Merge branch 'psanan/ts-examplebugfix' into maint

* psanan/ts-examplebugfix:
  TS tutorial: example has no embedded method so needs -ts_adapt_type none
  added MatSetUp calls to TS tutorials 16 and 21