Bugs in SparseMatrix C++11 checks for map selection

[mneilly]

SparseMatrix.hpp contains two bugs in the following C++ version check as of commit 299047b:

#if __cplusplus <= 201103L
// for C++03
#include <map>
typedef std::map< global_int_t, local_int_t > GlobalToLocalMap;
#else
// for C++11 or greater
#include <unordered_map>
using GlobalToLocalMap = std::unorderd_map< global_int_t, local_int_t >;
#endif

The check of __cplusplus performs a less than or equal check which should be a less than check. As it is written passing -std=c++11 to g++ causes the "// for C++03" code to be used.

In the "// for C++11 or greater" code, std::unordered_map is incorrectly spelled as std::unorderd_map. It is missing the e between the r and d.

[luszczek]

Fixed in 002fc8c