[Tile-serving] [openstreetmap/osm2pgsql] Command line option "-V" to include library versions (#844)

[mmd]

Now that we have a number of compile time options, `osm2pgsql -V` should print some more details about used libraries to facilitate future issue analysis.



### Option 1 - default

```
osm2pgsql version 0.96.0-RC1 (64 bit id space)

Compiled using the following library versions:
Libosmium 2.14.0
Lua 5.2.4
```

### Option 2 - LuaJIT

```
osm2pgsql version 0.96.0-RC1 (64 bit id space)

Compiled using the following library versions:
Libosmium 2.14.0
Lua 5.1.4 (LuaJIT 2.0.4)
```

### Option 3 - no Lua at all

```
osm2pgsql version 0.96.0-RC1 (64 bit id space)

Compiled using the following library versions:
Libosmium 2.14.0
Lua support not included
```
You can view, comment on, or merge this pull request online at:

  https://github.com/openstreetmap/osm2pgsql/pull/844

-- Commit Summary --

  * Command line option "-V" to include library versions

-- File Changes --

    M cmake/config.h.in (1)
    M options.cpp (25)

-- Patch Links --

https://github.com/openstreetmap/osm2pgsql/pull/844.patch
https://github.com/openstreetmap/osm2pgsql/pull/844.diff

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