Make include guards standard-compliant

Description

Some include guards used a name pattern which is reserved for the implementation of a C++ compiler. This detail can be fixed by the deletion of leading underscores.I suggest to make the used prefixes also consistent.

Environment

None

Assignee

Markus Elfring

Reporter

David Dight

Labels

None

Branch

master

Products

None

Fix versions

Affects versions

Priority

Minor
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