Detect likely-unintended IF statements with multiple clauses, no parentheses

[isc-tleavitt]

Reported internally within InterSystems:

It's a relatively common error to not include parenthesis in IF statements with multiple clauses. This almost always produces unexpected results.

I'd suggest two basic warnings:

|| - Any use of || where adjacent non-whitespace characters are not the appropriate parenthesis.
&& - Any use of && where adjacent non-whitespace characters are not the appropriate parenthesis.