The latest insertion of new XML and binary IO read/writes of std::list,
std::map, std::pair, and std::complex apparently is confusing the gcc-4.4.6
compilers. The compiler is complaining about examples/t_entry.cc and some
RComplex<float> being used in there. My clang v6 compiler has no issues. Sigh.
Need to fix.
Removed all uses of "using namespace std". Cleaned up all codes. Now
compiles under make check. This seems to fix up a strange issue under
gcc 4.4.6 where the compiler gets confused about distinguishing QDP::RComplex
and the std::complex.
Cleaned up uses of unqualified namespace "std".
Cleaned up another std usage.
Merge in changes from 'fix-complex-bug' branch.