Add BIP 66 notice to the 0.10 release notes.
Add BIP 66 notice to the 0.10 release notes.

Conflicts:
	doc/release-notes.md

Rebased-From: 04ca082dd9c1d4221af65d945a66b87e66058f92
Github-Pull: #5757

Infernoman/crowncoin,domob1812/crowncoin,domob1812/crowncoin,Crowndev/crowncoin,Crowndev/crowncoin,Infernoman/crowncoin,Infernoman/crowncoin,Crowndev/crowncoin,Infernoman/crowncoin,Crowndev/crowncoin,domob1812/crowncoin,domob1812/crowncoin,Crowndev/crowncoin,domob1812/crowncoin,Infernoman/crowncoin,Infernoman/crowncoin,domob1812/crowncoin,Crowndev/crowncoin