epx10 is a extension to the c++ standard library from glibc which is not in libc. To provide support for llvm compilers alonw with gcc I have changed all calls to exp10(x) to pow(10, x).
Aaron Dotter implimented a C++ version of Frank Timmes' fortran code helmholtz.f90. I have taken that and refactored it to work in the 4DSEE code style. This has mostly involved some light moving of stuff around. The biggest change is removing all globals, and reorienting memory to be heap allocated and contiguous. This is because there was too much memory being stack allocated.
