Fix sconstruct:
Fix sconstruct:

'c++' is the C++ compiler.  There is no reason to assume either clang++
or g++.

/usr/local/include must be included on modern unixes to use boost.

jkhoogland/cppitertools,jkhoogland/cppitertools,tempbottle/cppitertools,ryanhaining/cppitertools,jkhoogland/cppitertools,tempbottle/cppitertools,tempbottle/cppitertools,ryanhaining/cppitertools,ryanhaining/cppitertools