Move the brushes into C:\Program Files (x86)\Glimpse Image Editor\Glimpse 0.1.2\share\glimpse\2.0\brushes
.
Move brushes into C:\Program Files\GIMP 2\share\gimp\2.0\brushes
.
Move brushes into /usr/share/gimp/2.0/brushes
.
Alternatively you can do this using the Terminal:
sudo mv brushes /usr/share/gimp/2.0/brushes
Restart SIMP (GIMP, CHIMP, Glimpse).