[Tile-serving] [osm2pgsql] let CMake handle the C++11 flag (#480)

[Rolf Eike Beer]

Since CMake 3.1 this can be handled by CMake itself. For the compilers that until now got this flag set leave the old code in place. The variables that will enable the C++11 mode in newer CMake version will not do anything in older ones, so just unconditionally set them.
You can view, comment on, or merge this pull request online at:

  https://github.com/openstreetmap/osm2pgsql/pull/480

-- Commit Summary --

  * let CMake handle the C++11 flag

-- File Changes --

    M CMakeLists.txt (8)

-- Patch Links --

https://github.com/openstreetmap/osm2pgsql/pull/480.patch
https://github.com/openstreetmap/osm2pgsql/pull/480.diff

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Reply to this email directly or view it on GitHub:
https://github.com/openstreetmap/osm2pgsql/pull/480
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