Allow options to be passed to SOLVEBVP for backwards compatibility.
Only show CHEBOP concatenation message once per non-linear solve.
Remove commented line.
Simplify calling sequence.
Merge pull request #1044 from chebfun/fix-solvebvp-options

Fix solvebvp options
Add some historical background to LEGPTS.
Remove unintended changes.
Merge branch 'development' into feature-chebfun2-mixed-techs
Change the way Chebfun2 computes vscales. This is mathematically equivalent to before but a different sequence of operations are called for speed with chebfun2 objects with fourtech technology.