Backport fix - Issue #662692 strange decimal precision error on floating numeric fields.

[amorsent]

Issue #662692 by joachim, hanoii, ShaneOnABike, lunazoid, 5t4rdu5t: strange decimal precision error on floating numeric fields.

Cherry-picked: https://git.drupalcode.org/project/views/commit/8d86ce2

Essentially in views_handler_field_numeric, if you don't set precision you can get weird floating point issues.

[amorsent]

Note: This is the commit that went into Views 7.x-3.x and is how it is to this day.
It is worth noting, though this fixes the floating point issue, it retains any trailing 0's in the decimal. eg: 99.00800

I discovered a different fix went into Views in core:
Issue #1952926 NumericField.php does not support negative value rendering in range -0.xx.
Commit

That issue is apparently solving a different issue, but also fixes this one. Instead of cutting and pasting the decimal component it is determining the precision and then rounding. This also avoids the trailing 0's issue....

I can roll an alternate pull request using that fix if you like - but presumably it should go into 7.x-3.x first?