Small change to cutoff tolerance for chebcoeffs in B.  Not sure why this fixed iissue 1232 though.
clean-up class-related functions vs private static methods

Remove the private static declarations.  Note: these seem to work on
Matlab 2014a but looks against spec:

Private static methods should be accessed as "class.method" whereas
class-related functions are just local private functions such as
utilities defined in this particular m-file.

Also, truncate an incorrect comment that referred to subfunction.
Merge remote-tracking branch 'cbm755/notspec' into development
Merge branch 'development' into feature-firstOrder-reform

Conflicts:
	@chebfun/chebfun.m