Work around a Cocoa font parsing bug

Work around a Cocoa font parsing bug
https://bugs.webkit.org/show_bug.cgi?id=142446
Source/WebCore:

<rdar://problem/20086223>

Reviewed by Simon Fraser.

Work around a bug in Cocoa regarding font parsing.

* svg/SVGToOTFFontConversion.cpp:

LayoutTests:

Reviewed by Simon Fraser.

Adding a few extra tests for bits of SVG fonts that could use some more tests.

* svg/fonts/resources/svg-font-general.svg: Updated and moved from svg-font-horiz-origin-font.svg
* svg/fonts/svg-font-general.html: Updated and moved from svg-font-horiz-origin.html
* svg/fonts/svg-font-general-expected.html: Updated and moved from svg-font-horiz-origin-expected.html

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@181278 268f45cc-cd09-0410-ab3c-d52691b4dbfc