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svn:author
V 3
pfg
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svn:date
V 27
2015-05-21T20:39:39.061459Z
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svn:log
V 206
MFC	r282863:

Adjust visibility macros.

The GCC visibility attributes were introduced in GCC 4.0.
Apparently the "protected" attribute was introduced only
until GCC 4.2, but we are not currently using it.

END