interpmodule.cc: fix name clash around 'equal'
interpmodule.cc: fix name clash around 'equal'

obviously an reference to 'equal' has been introduced between boost 1.40 and
boost 1.52.

The compile warnings about  'dereferencing type-punned pointer will break
strict-aliasing rules' can be safely ignored.

unseenlaser/linuxcnc,kinsamanka/machinekit,narogon/linuxcnc,EqAfrica/machinekit,EqAfrica/machinekit,araisrobo/machinekit,mhaberler/machinekit,araisrobo/machinekit,cdsteinkuehler/MachineKit,bobvanderlinden/machinekit,mhaberler/machinekit,unseenlaser/machinekit,RunningLight/machinekit,EqAfrica/machinekit,araisrobo/machinekit,bobvanderlinden/machinekit,unseenlaser/machinekit,araisrobo/machinekit,EqAfrica/machinekit,strahlex/machinekit,narogon/linuxcnc,araisrobo/machinekit,cdsteinkuehler/linuxcnc,ArcEye/machinekit-testing,RunningLight/machinekit,EqAfrica/machinekit,ArcEye/MK-Qt5,EqAfrica/machinekit,RunningLight/machinekit,RunningLight/machinekit,strahlex/machinekit,ArcEye/MK-Qt5,bobvanderlinden/machinekit,mhaberler/machinekit,RunningLight/machinekit,bobvanderlinden/machinekit,cdsteinkuehler/MachineKit,Cid427/machinekit,kinsamanka/machinekit,bmwiedemann/linuxcnc-mirror,aschiffler/linuxcnc,ikcalB/linuxcnc-mirror,ArcEye/MK-Qt5,ArcEye/machinekit-testing,Cid427/machinekit,aschiffler/linuxcnc,strahlex/machinekit,aschiffler/linuxcnc,ArcEye/MK-Qt5,EqAfrica/machinekit,ArcEye/machinekit-testing,strahlex/machinekit,unseenlaser/machinekit,cdsteinkuehler/linuxcnc,cdsteinkuehler/MachineKit,ArcEye/machinekit-testing,ArcEye/MK-Qt5,mhaberler/machinekit,Cid427/machinekit,Cid427/machinekit,kinsamanka/machinekit,ArcEye/MK-Qt5,ikcalB/linuxcnc-mirror,ianmcmahon/linuxcnc-mirror,strahlex/machinekit,mhaberler/machinekit,ikcalB/linuxcnc-mirror,ArcEye/machinekit-testing,ikcalB/linuxcnc-mirror,Cid427/machinekit,kinsamanka/machinekit,ArcEye/machinekit-testing,ArcEye/MK-Qt5,aschiffler/linuxcnc,cdsteinkuehler/linuxcnc,cdsteinkuehler/linuxcnc,cdsteinkuehler/MachineKit,bmwiedemann/linuxcnc-mirror,unseenlaser/linuxcnc,narogon/linuxcnc,ArcEye/machinekit-testing,cdsteinkuehler/MachineKit,bmwiedemann/linuxcnc-mirror,ianmcmahon/linuxcnc-mirror,mhaberler/machinekit,ianmcmahon/linuxcnc-mirror,bobvanderlinden/machinekit,cdsteinkuehler/MachineKit,narogon/linuxcnc,araisrobo/machinekit,Cid427/machinekit,unseenlaser/linuxcnc,ianmcmahon/linuxcnc-mirror,kinsamanka/machinekit,ianmcmahon/linuxcnc-mirror,ikcalB/linuxcnc-mirror,unseenlaser/machinekit,kinsamanka/machinekit,unseenlaser/machinekit,bobvanderlinden/machinekit,ikcalB/linuxcnc-mirror,araisrobo/machinekit,ArcEye/MK-Qt5,Cid427/machinekit,unseenlaser/machinekit,ArcEye/machinekit-testing,aschiffler/linuxcnc,ikcalB/linuxcnc-mirror,RunningLight/machinekit,cdsteinkuehler/linuxcnc,bmwiedemann/linuxcnc-mirror,RunningLight/machinekit,kinsamanka/machinekit,bmwiedemann/linuxcnc-mirror,cdsteinkuehler/linuxcnc,bmwiedemann/linuxcnc-mirror,bobvanderlinden/machinekit,ianmcmahon/linuxcnc-mirror,bmwiedemann/linuxcnc-mirror,unseenlaser/machinekit,strahlex/machinekit,Cid427/machinekit,strahlex/machinekit,mhaberler/machinekit,ianmcmahon/linuxcnc-mirror,RunningLight/machinekit,unseenlaser/linuxcnc,araisrobo/machinekit,araisrobo/machinekit,EqAfrica/machinekit,kinsamanka/machinekit,unseenlaser/linuxcnc,unseenlaser/machinekit,bobvanderlinden/machinekit,narogon/linuxcnc,mhaberler/machinekit