Added support for passing the length of a Fortran CHARACTER as size_t instead of int.  Added a configure option to set; note that despite documentation to the contrary, it looks like some compilers still pass the length as an int (the common practice for decades), so changing to size_t must be made with extreme caution
clmake: filter "install-sh" too

Caused problems for the "mpich-osx" jenkins build.

No reviewer.
Fix incorrect timing reporting in llist bench

The linked list benchmarks were reportin the sum of the timings across
all nodes, rather than the maximum.

Reviewer: none