[Libreoffice] [PATCH][REVIEW] SetNamedRanges speedup fdo#35357

[Laurent Godard]

Hi all

Here is my first patch and want at first thanks a lot everybody who
helped me starting my build and especially Kohei for his patience and
deep knowledge in calc. Kohei is a great mentor :-)

The purpose of this patch is to speed up things when sheet.link is used.
It is based on the 3.4 branch

The result with the test case in the fdo#35357 is a drop for the 1211
namedRanges from 5.781 seconds to 0.931 seconds.

The test case only focused on sheet.link call but that patch should
improve the file loading in general, especially with documents with a
large number of range names.

it would also be great for me if it could be part of the 3.4.x branch as
this would affect a large number of my users instead of being stuck to
OOo 3.2.1

thanks in advance for your review and thank a lot again to Kohei

Laurent