From: Mark Wooding <mdw@distorted.org.uk>
Date: Sat, 26 May 2018 15:18:43 +0000 (+0100)
Subject: utils/: Split compiler-version macros into a separate header.
X-Git-Tag: 2.3.0~9
X-Git-Url: https://git.distorted.org.uk/~mdw/mLib/commitdiff_plain/33e3ac9056f046affd69e3b8871275e5e2697aa4?hp=33e3ac9056f046affd69e3b8871275e5e2697aa4

utils/: Split compiler-version macros into a separate header.

This way we can use them in other headers without the namespace mess of
`macros.h'.

Also, actually document `CLANG_VERSION_P'.
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