Revert "Don't use msvc libs for mingw build"

This reverts commit 3985c01ad71159b888677d0fe2019d7a05debeed.
Handle blank blocks in database

Fix screwed-up indentation
Do the same for LevelDB interface
Fix multicaller support in RequestQueue
Add missing RequestQueue doc
Fix Result of processed Request was written to invalid (non existent) ResultQueue if requesting thread timed out before
Revert patch 58f036ad1 that causes object duplication (which tried to fix objects getting hidden from client) and fix the original problem correctly. This fixes the second distinct object duplication bug.
Increase liquid_loop_max to 10000 again
Fix issue #1009 (minetest.get_connected_players() returns non-existing players)
fix gettext compile issues under win32
Fix modmanager screenshot path
Mapgen V6: Respect water_level setting
LuaVoxelManip: Update parameter index of set_lighting()
Fix possible implicit conversion of NULL to std::string
Fix usage of 'minetest' where 'engine' was intended
Fix crash when pressing Enter key in formspec menu
Prevent enabling Shaders if Direct3D is used
Fix invalid escape sequence in database migration code
Translated using Weblate (Czech)
Translated using Weblate (Czech)