Log Message:
gnumeric: update to 1.12.40.

Gnumeric 1.12.40

Andreas:
	* Fix histogram tool for the case of no labels. [#795475]

Dean McCarron:
	* Introspection fixes.

Morten:
	* Add floating-point environment sanity check.  [#794515]
	* Before saving, verify that files hasn't changed on disk.  [#334024]
	* Add GUI for comparing sheets.
	* Introspection fixes.
	* Clean up workbook view construction.
	* Test suite improvements.
	* Fix problems with boxed types.
	* Avoid most punting for object properties.
	* Fix paste from LibreOffice.
	* Fix paste to LibreOffice -- use Biff8.  [#795280]
	* Allow inter-process paste-special.  [#346630]
	* Fix ssconvert --merge-to problem with names.  [#795408]
	* Fix problem with image pasting.
	* Allow pasting an image into Gnumeric.  [#366816]
	* Full-column paste includes column width.  [#121722]
	* Auto-fix shared array formulas in gnumeric files.
	* No-net-access doc build.  [#790226]
	* No-net test suite fixes.