Without this, cavegen will use values in the heightmap before they are initialized.

Behaviour on Android remains the same until other alternatives can be devised (if possible)

See #2425 (and the many other -- now closed -- issues reporting this feature as a bug)

Also change bzero to memset. bzero doesn't work on windows

ARMv7 default build
Update curl
Update OpenSSL

Heightmaps: Fix uninitialised values in mgv5/mgv6. findGroundLevel: Return -MAP_GENERATION_LIMIT if surface not found

This caused confusing error messages like "argument #4 to set_node is not a string."

For usages of assert() that are meant to persist in Release builds (when NDEBUG is defined), replace those usages with persistent alternatives

Add schematic decoration force placement flag

* Also change some std::list to std::vector for ClientMap::renderMap
* Remove disabled code in ClientMap::renderMap, disabled since a long time

Server.cpp Use std::list instead of std::vector for playSound, fillMediaCache, sendRequestedMedia, sendMediaAnnouncement and related functions

Server::AsyncRunStep: buffered_messages now uses std::vector instead of std::list. * sendRemoveNode and sendAddNodes are also converted as a side effect

- Fixes particle draworder
- Fixes nodehighlighting

Performance improvement: Use std::list instead of std::vector for request_media, Server::getModNames, Environment::m_simple_objects.
* Also remove unused Server::m_modspaths

Conf.example: Update mgv5 mapgen params
Mgv7: Lava caves only below -256

* Also remove dead code Map::unloadUnusedData which is dead since a long time