* src/application-events.cpp: Ignore next ItemLoad if
ignore next load is true.
* src/gpgoladdin.cpp (GpgolRibbonExtender::GetIDsOfNames): Map
overrideFileSaveAs.
(GpgolRibbonExtender::Invoke): Call override_file_save_as.
(GetCustomUI_MIME): Override FileSaveAs.
* src/gpgoladdin.h: Add a global g_ignore_next_load.
* src/ribbon-callbacks.cpp (override_file_save_as): Set the
variable and then pass the event along.
* src/ribbon-callbacks.h (override_file_save_as): Declare.

parms->rgvarg[0].pvarVal->boolVal = VARIANT_FALSE;