Signed-off-by: Danilo Piparo <danilo.piparo@cern.ch>

Signed-off-by: Danilo Piparo <danilo.piparo@cern.ch>

Fixes using default tolerance in the Integrator classes. This fixes also  a bug caused by a previous commit in ROOT::Math::IntegratorOneDim

Should be looked into in the future.

Catch-all printValue implementation changed to enable correct invocation if only parent type overload exists (ex. if there is no overload for TF1*, compiler invokes the overload to its best parent overload match, in the worst case void*).
Argument changed from reference to pointer to support this.
isEnumType Coverity bug changed from if to assert (coding, not runtime error)
Changed the way printValue is invoked in order to correctly cast Value to the needed value (e.g. LL -> short). Extracted value stays in scope while we execute printValue, because we use the address.

- The methods' header is "C++ comments' style"
- Only one blank line before the methods' headers

- The methods' header is "C++ comments' style"
- Only one blank line before the methods' headers

- The methods' header is "C++ comments' style"
- Only one blank line before the methods' headers

- The methods' header is "C++ comments' style"
- Only one blank line before the methods' headers

- The methods' header is "C++ comments' style"
- Only one blank line before the methods' headers

- The methods' header is "C++ comments' style"
- Only one blank line before the methods' headers

- The methods' header is "C++ comments' style"
- Only one blank line before the methods' headers

- The methods' header is "C++ comments' style"
- Only one blank line before the methods' headers

- The methods' header is "C++ comments' style"
- Only one blank line before the methods' headers

- The methods' header is "C++ comments' style"
- Only one blank line before the methods' headers

- The methods' header is "C++ comments' style"
- Only one blank line before the methods' headers