evas_vg_load_svg: get rid of static Evas_SVG_Parsing
It is good to store values from that struct in a parsing/loading context
static variable is a big NO NO:
- Ugly code design,
- Might not work when trying to load more than one SVG file.
Reviewers: jpeg, smohanty
Subscribers: jenkins, cedric
Differential Revision: https://phab.enlightenment.org/D5399