orthographic matrix does not match those from glm etc

[cbaggers]

https://gist.github.com/mfiano/6573a9b32a77dd3174f2453502ad9c39

;; these are the results of rtg-math compared to other libraries when constructing an orthographic projection matrix:

;; window size: 320x180
;; near: 0
;; far: 64

;; rtg-math
;; 0.0125, 0.0, 0.0, -0.0
;; 0.0, 0.022222223, 0.0, -0.0
;; 0.0, 0.0, -0.03125, -1.0
;; 0.0, 0.0, 0.0, 1.0

;; 3 other libraries:
;; C's GLM, 3d-vectors, gamebox-math
;; 0.00625 0.0 0.0 -0.0
;; 0.0 0.011111111 0.0 -0.0
;; 0.0 0.0 -0.03125 -1.0
;; 0.0 0.0 0.0 1.0

Thanks to mfiano for spotting this.

Make sure to update the gpu version too