Fixes for the Intel compiler version 16 and 17 (#223)

Proposed patch to master branch:
* Qualify template in `indirect_view` to accommodate incorrect function template specialization determination (icpc ignores §14.8.2.4/9 rule on lvalue versus rvalue template arguments).
* Use parenthesis constructors for type parameter in `pointer_proxy`, as icpc has not adopted the corrected behaviour for DR#1467 [http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#1467].