Fix linking in calendar/libegdbus/Makefile.am
Fix linking in calendar/libegdbus/Makefile.am

GNOME_PLATFORM_LIBS is too broad.  It drags in gtk3, which causes
libecal to link against gtk3, which we definitely don't want.  Use
E_DATA_SERVER_LIBS instead.

Thanks to Benjamin Otte for spotting this.

gcampax/evolution-data-server,tintou/evolution-data-server,tintou/evolution-data-server,matzipan/evolution-data-server,gcampax/evolution-data-server,Distrotech/evolution-data-server,matzipan/evolution-data-server,matzipan/evolution-data-server,gcampax/evolution-data-server,Distrotech/evolution-data-server,Distrotech/evolution-data-server,matzipan/evolution-data-server,gcampax/evolution-data-server,Distrotech/evolution-data-server,tintou/evolution-data-server,matzipan/evolution-data-server,Distrotech/evolution-data-server,tintou/evolution-data-server