Ent-eigen editors/calligra.

[tcberner]

Summary

The recent update of math/eigen3 broke editors/calligra, as opencv and eigen-3.2+ contain same named parts.
Remove the using namespace Eigen from the files, and import the qualified class names instead.

This is a simplified backport of https://phabricator.kde.org/R37:2db4438671e17002c7b02e3ad3a5208930765e4f -- where they decided to qualify the classes each time (but would it would take more time to backport it -- so I prefer the sed call this time).

[rakuco]

lgtm with a nitpick (inline). Did anything else break with the Eigen update? I'm almost reverting it and asking for an exp-run.

editors/calligra/Makefile

101

Do you really need the g at the end of the expression? I'd imagine each file has a single using namespace Eigen declaration.

[tcberner]

You're right, I don't need the 'g'.

[tcberner]

I'll build the math/eigen3 dependencies later to check for other breaks.