added ability to add install prefix and thus installs libs & headers
updated tally to build from master CMakeFile.txt
Merge pull request #282 from makeclean/updated_install

added ability to add install prefix and thus installs libs & headers
Updates for executable and tests
Compiles with skeletal pyne::Material object
Intermediate checkin; does not compile
Try to reference Material.fluka_write_material(int)
Incorporate pyne::Material fluka() function
Add files to read Fluka Database; Preliminary
Recover newly added files
Fix some typos; compiles