Move all exported variables into extern "C" block

14 jobs for master in 9 minutes and 22 seconds (queued for 15 seconds)
Status Job ID Name Coverage
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passed #31496
FreeBSD
jsdoor-freebsd

00:04:34

passed #31497
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jsdoor-linux

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passed #31499
FreeBSD
jsdoor-windows

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passed #31491
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sbbs-freebsd

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passed #31486
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sbbs-linux

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passed #31489
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sbbs-windows

00:05:42

passed #31498
FreeBSD
sexpots-freebsd

00:00:15

passed #31487
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sexpots-linux

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passed #31490
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sexpots-windows

00:00:27

passed #31494
FreeBSD
syncdraw-freebsd

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passed #31495
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syncdraw-linux

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passed #31492
FreeBSD
syncterm-freebsd

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passed #31488
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syncterm-linux

00:02:39

passed #31493
FreeBSD
syncterm-windows

00:01:57