Update: Translations from eints
italian: 1 change by AlphaJack
romanian: 13 changes by ALEX11BR
finnish: 6 changes by VeeraKoo
slovak: 202 changes by FuryPapaya
spanish: 240 changes by MontyMontana

Update: Translations from eints
slovak: 23 changes by FuryPapaya
turkish: 66 changes by ozcanakdora

Update: Translations from eints
korean: 8 changes by telk5093

Update: Translations from eints
czech: 1 change by LubosKolouch
german: 18 changes by matthiasradde

Update: Translations from eints
german: 1 change by matthiasradde
polish: 17 changes by yazalo

Update: Translations from eints
romanian: 7 changes by ALEX11BR
portuguese (brazilian): 44 changes by Lucas559-noob

Update: Translations from eints
portuguese (brazilian): 22 changes by Lucas559-noob
polish: 6 changes by pAter-exe

Update: Translations from eints
turkish: 28 changes by nullaf
dutch: 1 change by rcpaul

Update: Translations from eints
german: 1 change by frosch123

Feature: Improve restart command

When the restart command is issued, a normal map is always spawned.

This improvement takes into account the current state of _file_to_saveload to check if a savegame/scenario/heightmap was previously loaded, and loads the same resource again.

Update: Translations from eints
korean: 1 change by telk5093

Update: Translations from eints
ukrainian: 11 changes by Strategy

Update: Translations from eints
catalan: 57 changes by juanjo

Update: Translations from eints
ukrainian: 18 changes by Strategy

Update: Translations from eints
swedish: 1 change by Joel_A

Change: Log when rejecting a TAR archive for extraction

Based on report in <https://www.tt-forums.net/viewtopic.php?f=31&t=87374>;

Codechange: Spell 'Viewport' consistently

Some places in the codebase misspell 'Viewport' as 'ViewPort' or 'view_port'.
This patch makes everything consistent.

Fix: [CMake] Don't strip final newline from regression output.

The expected regression output files all end with a newline. As such, we have to make sure we capture the output from OpenTTD with the last newline intact.

Fix: GCC warns about possibly uninitialized data in signal.cpp

When compiling with '-Og', GCC warns about variables that are
initialized by reference in the condition of a 'while' loop.

This commit silences the warning by explicitly initializing the
variables in question to their respective 'invalid value' markers,
which will most likely be optimized out when the compiler realizes
the values are never used.

Update: Translations from eints
french: 1 change by glx

Update: Translations from eints
belarusian: 35 changes by KorneySan

Update: Translations from eints
belarusian: 64 changes by KorneySan
russian: 2 changes by KorneySan

Update: Translations from eints
belarusian: 11 changes by KorneySan

Update: Translations from eints
korean: 1 change by telk5093

Change #8162: Conversion of Town Road, Impr. Error

This changes the error when you attempt to convert a road owned by a town to another road, specifying that it's owned by the town rather than simply being incompatible. As the original poster of the issue pointed out, these seemed to be the only occurences of the incompatible road string, so now it's unused, but they would be left untouched in case of future use or since changing it to a different error would do the work of removing it then. If requested, it likely wouldn't be too difficult to remove the string entirely.

Fix: Thread unsafe use of SendPacket for PACKET_SERVER_MAP_SIZE

NetworkTCPSocketHandler::SendPacket is not thread safe and may not
be used concurrently from multiple threads without suitable locking

Fix: Globally apply preprocessor directive coding style

Global; except for the 32-bit SSE blitter, which has some #DEFINEs
in not-very-nice places.

Update: Translations from eints
czech: 3 changes by djst

Fix: fix building release tags

I tried building a tag, and got this error:

CMake Error at cmake/scripts/FindVersion.cmake:85 (string):
string sub-command REGEX, mode REPLACE: regex "^[0-9.]*$" matched an empty
string.

Fix: set Mac deployment target

This silences an awful lot of warnings.

Add: [NewGRF] Industry behaviour flag to override second cargo production clamping for water industries when using smooth economy.

Smooth economy is only used when the corresponding setting is enabled and the industries does not use the production callback.

Fix: Incorrect save/load array size of Town::cargo_accepted

In 11ab3c4e the number of cargo types was changed from 32 to 64.
The save/load of Town::cargo_accepted was not updated, such that
only half of the data structure is saved/loaded in savegame versions
199 to 218.
Discard and regenerate data from all savegame versions prior to 219.

Fix 887b912af: MinGW requires an extra link flag with _FORTIFY_SOURCE (#8246)

see #7860

Codechange: Only apply FORTIFY_SOURCE in non-debug builds

It requires -O1 (or greater) and GCC spews out warnings if you try using it with -O0

Update: Translations from eints
indonesian: 16 changes by adjayanto

Update: Translations from eints
swedish: 3 changes by Joel_A

Update: Translations from eints
ukrainian: 1 change by nsergiy
korean: 1 change by telk5093

Fix 63ccb36e: Incorrect string type for OrderBackup::name save/load

In 63ccb36e BaseConsist::name was changed from a malloced char*
to a std::string.
OrderBackup inherits from BaseConsist.
The saveload of OrderBackup::name was not updated.

Fix: Thread unsafe use of NetworkAddress::GetAddressAsString

Remove static buffer form of NetworkAddress::GetAddressAsString.
This is used in multiple threads concurrently, and is not thread-safe.

Replace it with a form returning std::string.

Update: Translations from eints
swedish: 33 changes by Joel_A

Fix: Racy use of flags in TCPConnecter::CheckCallbacks

conected and aborted flags are used concurrently from multiple threads.

Fix: Violation of strict weak ordering in group name sorters

This could be caused by a group being renamed, and the old
name being cached from a previous sort.

See: #7838

Fix: Violation of strict weak ordering in engine name sorter

This could be caused by an engine being renamed, and the old
name being cached from a previous sort.

See: #7838

Fix: Silence some warnings when building with clang-cl on VS 2019

Clang-cl presents as both _MSC_VER and __clang__ in the preprocessor which makes some things confusing.

Fix #8104: Always add WINDOW_RESIZABLE flag to SDL2 (#8211)

This fixes a bug that can reproduced with these steps:
* Start openttd in fullscreen mode
* Turn off fullscreen mode
* Try to resize the window. The window can't be resized.