Add gtk-doc-strings for compat #defines and ASN1_VERSION:

Signed-off-by: Andreas Metzler <ametzler@bebt.de>
8 jobs for tmp-2018-fix-gtk-doc in 34 minutes and 40 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #70721110
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MinGW32

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passed #70721108
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asan

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clang

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gnutls

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passed #70721112
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static-analyzers

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ubsan

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x86

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x86-64

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