Revert "DomException.vala: rename file to comply with spec, improve docs, whitespace"
Revert "DomException.vala: rename file to comply with spec, improve docs, whitespace"

This reverts commit dac01bb57c68f811ab06eed8e660104e88b92ad1.

GNOME/gxml,GNOME/gxml,GNOME/gxml,GNOME/gxml