ENH: make ITstream positioning methods noexcept

ENH: add rank() method for compound tokens

ENH: add IOstream::minPrecision(unsigned)

- reduced typing, more expressive, no namespace ambiguity with max()

    new: IOstream::minPrecision(10);
    old: IOstream::defaultPrecision(max(10u, IOstream::defaultPrecision()));

STYLE: namespace qualify min/max for some buffer sizing [clang/hipp]

applications/utilities/finiteArea/makeFaMesh/makeFaMesh.C

@@ -155,8 +155,8 @@ int main(int argc, char *argv[])
     }
     else
     {
-        // Set the precision of the points data to 10
-        IOstream::defaultPrecision(10);
+        // More precision (for points data)
+        IOstream::minPrecision(10);
 
         Info<< nl << "Write finite area mesh." << nl;
         aMesh.write();