Fixing typo in ISO doc name.
Small whitespace change.
Move definition of generic lambda.
Applying changes from telecon.
Applying changes from review.
Moving 7.1.6.5/8 to 14.

Also added normative text explaining the reason, for feq
but not eq errors.
Change explicit instantiation.
Address of overloads.
Fix typo in example.
Clarification.
Adding more constraint examples.
Reworking concept specifier section.
Adding exception specs.
Updating function decls.
Moving virtual function restrictions.

Added a new clause for derived classes.
Added the new clause to main.
Moved restrictions out of classes.
Adds prohibition against adding constraints to an override.
Fixing reference errors.
Be explicit in editorial comments.
Small update to lambda expressions.

Move the definition of generic lambdas out of its current
paragraph to make it a little more obvious.
Editorial fixes.

Be explicit with editorial update.
Also, fix a spacing issue in an example.
Adding sections for future content.