Initial port of Michael Overtons modified FOV code.
Updates to FOV from MO (edited by NH).
Allow CHEBPOLYVAL to accept CHEBFUN inputs.
Adding chebfun/polyval method.
Documentation and style fixes for fov(), polyval(), chebpolyval().
Throw error if first argument to POLYVAL() is a CHEBFUN.
Merge branch 'feature-fov-corrected' of github.com:chebfun/chebfun into feature-fov-corrected

Conflicts:
	chebpolyval.m
Fix spelling in two error IDs.
Merge branch 'feature-fov-corrected' into development
Ensure hidden figure windows are closed.
Merge branch 'development' of github.com:chebfun/chebfun into development
Merge remote-tracking branch 'origin/development' into feature-colloc-periodic