Definitions of min/max macros conflict with stl_algobase.h

[chchang6]

  CXX      n-body-methods/gem/gemnoui-calculate_potential.o
In file included from /nopt/nrel/apps/base/2020-05-12/spack/opt/spack/linux-centos7-x86_64/gcc-4.8.5/gcc-8.4.0-xrmnckz436rnkcwooooi2r7n35pojkov/include/c++/8.4.0/bits/char_traits.h:39,
                 from /nopt/nrel/apps/base/2020-05-12/spack/opt/spack/linux-centos7-x86_64/gcc-4.8.5/gcc-8.4.0-xrmnckz436rnkcwooooi2r7n35pojkov/include/c++/8.4.0/ios:40,
                 from /nopt/nrel/apps/base/2020-05-12/spack/opt/spack/linux-centos7-x86_64/gcc-4.8.5/gcc-8.4.0-xrmnckz436rnkcwooooi2r7n35pojkov/include/c++/8.4.0/ostream:38,
                 from /nopt/nrel/apps/base/2020-05-12/spack/opt/spack/linux-centos7-x86_64/gcc-4.8.5/gcc-8.4.0-xrmnckz436rnkcwooooi2r7n35pojkov/include/c++/8.4.0/iostream:39,
                 from ../n-body-methods/gem/calculate_potential.cpp:25:
/nopt/nrel/apps/base/2020-05-12/spack/opt/spack/linux-centos7-x86_64/gcc-4.8.5/gcc-8.4.0-xrmnckz436rnkcwooooi2r7n35pojkov/include/c++/8.4.0/bits/stl_algobase.h:243:56: error: macro "min" passed 3 arguments, but takes just 2
     min(const _Tp& __a, const _Tp& __b, _Compare __comp)

In n-body-methods/gem/include/calculations.h, if I comment out the definitions, the build will proceed before

  CXXLD    gemnoui
./libtool: line 6000: cd: no: No such file or directory
libtool: link: cannot determine absolute directory name of `no'

Related to issue #16, where I get "yes" instead of "no", so seems like a Boolean variable is being used instead of a path variable (since this build is --without-opencl).