Simplify windows build process in build_guis.bat
Simplify windows build process in build_guis.bat

- builds only geometry, shapes and ausgab objects as those are the only
  ones needed for egs_view
- Removed iaea_phsp build
- Add variable the_config

MartinMartinov/EGSnrc,nrc-cnrc/EGSnrc,marenaud/EGSnrc,mchamberland/EGSnrc,marenaud/EGSnrc,crcrewso/EGSnrc,marenaud/EGSnrc,ftessier/EGSnrc,nrc-cnrc/EGSnrc,crcrewso/EGSnrc,marenaud/EGSnrc,nrc-cnrc/EGSnrc,ftessier/EGSnrc,nrc-cnrc/EGSnrc,mchamberland/EGSnrc,ftessier/EGSnrc,mchamberland/EGSnrc,MartinMartinov/EGSnrc,mchamberland/EGSnrc,mchamberland/EGSnrc,crcrewso/EGSnrc,nrc-cnrc/EGSnrc,MartinMartinov/EGSnrc,crcrewso/EGSnrc,crcrewso/EGSnrc,MartinMartinov/EGSnrc,ftessier/EGSnrc,ftessier/EGSnrc,ftessier/EGSnrc,marenaud/EGSnrc,mchamberland/EGSnrc,marenaud/EGSnrc,MartinMartinov/EGSnrc