Allow bigger (1 MEEELLION rows) spreadsheets from reporter output

[Mike Rylander]

We've always used Spreadsheet::WriteExcel::Big to generate Excel output from reports. That module has a limitation of 64k rows, imposed by the binary Excel format. Recently, the Excel::Writer::XLSX module has become feature-complete enough that we can use that instead, and the XML format files that it writes are now supported by the majority of installed versions of Excel (and OpenOffice) -- the format arrived with Excel 2007, released in 2006 (8 years ago). So, let's switch to that!

Branch forthcoming...

[Mike Rylander (mrylander)]

Here it is:

http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/miker/bigger-spreadsheets

[Ben Shum (bshum)]

Based on discussions on IRC, I changed the makefile for ubuntu-trusty to use the package libexcel-writer-xlsx-perl. And then I added a release note. Pushed to master, thanks Mike! I think this feature will be well received by many report runners.