externals: Update glad to 0.1.26

Updates the library from 0.1.25. Mainly fixes issues related to macOS,
but we may as well update the library.
This commit is contained in:
Lioncash 2018-08-07 02:24:29 -04:00 committed by zhupengfei
parent 0233f3286c
commit ae64175522
2 changed files with 3310 additions and 3212 deletions

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