We are not using Phabricator anymore

In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"

On some embedded platforms at least we have encountered situations
where DSOs contains broken symtabs, eu-elflint reports e.g.:

```
$ eu-elflint libQt5Qml.so.5.12
section [ 3] '.dynsym': symbol 1272: st_value out of bounds
section [ 3] '.dynsym': symbol 3684: st_value out of bounds
section [29] '.symtab': _GLOBAL_OFFSET_TABLE_ symbol size 0 does not match .got section size 18340
section [29] '.symtab': _DYNAMIC symbol size 0 does not match dynamic segment size 336
section [29] '.symtab': symbol 25720: st_value out of bounds
section [29] '.symtab': symbol 27227: st_value out of bounds
```

If we use heaptrack on an application that links against such a
library, it would crash when it tries to follow the out-of-bounds
symbols. Sadly, there's no equivalent to DT_STRSZ for the symbol
table, instead we have to obtain that from the section header. I don't
know of an efficient way to access the section header from the program
header, so instead this patch adds a procedure which mmaps the file
to parse the ELF structure directly to get the symtab size. To
minimize the overhead, we cache the results then in a hash table.

Then we can take this size into account and skip invalid symbols.

I want to add more pedantic checking of the symbol section size,
which would not be possible for this pseudo-dso.

Fixes cmake configure warning when using more modern ECM:
```
CMake Warning (dev) at /usr/share/ECM/modules/ECMFindModuleHelpers.cmake:112 (message):
  Your project should require at least CMake 3.16.0 to use FindKF5.cmake
Call Stack (most recent call first):
  /usr/share/ECM/find-modules/FindKF5.cmake:30 (ecm_find_package_version_check)
  src/analyze/CMakeLists.txt:41 (find_package)
This warning is for project developers.  Use -Wno-dev to suppress it.
```

In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"

In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"

Only use space for the output name of the target instead, which
is all we need here.

Fixes:
```
CMake Warning (dev) at tests/manual/with space/CMakeLists.txt:1 (add_executable):
  Policy CMP0037 is not set: Target names should not be reserved and should
  match a validity pattern.  Run "cmake --help-policy CMP0037" for policy
  details.  Use the cmake_policy command to set the policy and suppress this
  warning.

  The target name "my binary" is reserved or not valid for certain CMake
  features, such as generator expressions, and may result in undefined
  behavior.
This warning is for project developers.  Use -Wno-dev to suppress it.
```

Fixes:
```
CMake Deprecation Warning at 3rdparty/libbacktrace/CMakeLists.txt:34 (cmake_minimum_required):
  Compatibility with CMake < 2.8.12 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell
  CMake that the project does not need compatibility with older versions.
```

Fixes:
```
CMake Warning (dev) at /usr/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:438 (message):
  The package name passed to `find_package_handle_standard_args` (LibUnwind)
  does not match the name of the calling package (Libunwind).  This can lead
  to problems in calling code that expects `find_package` result variables
  (e.g., `_FOUND`) to follow a certain pattern.
Call Stack (most recent call first):
  cmake/FindLibunwind.cmake:69 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
  CMakeLists.txt:149 (find_package)
This warning is for project developers.  Use -Wno-dev to suppress it.
```

Sean Linsley authored Jun 08, 2022 and Milian Wolff committed Jun 08, 2022

It seems Homebrew has changed its directory tree 🤷‍♀️

When this is passed we won't try to auto-start
heaptrack_gui and quit directly after recording.

In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"

In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"

The symbol isn't necessarily available, so skip
the test at runtime when that happens.

This way we don't run into an error when Lmid_t isn't defined
on other platforms.

Newer glibc merged libdl into libc, and removed the __libc_dlopen_mode
internal function. This broke our dark magic runtime attaching logic.
Instead, we now detect whether the symbol exists and then use it
or fallback to dlmopen as before. On Freebsd we'll still to dlopen
directly, I'm unsure if it has dlmopen and cannot test it.

We do not actually use the realloc ptr, i.e. we do not dereference
it - only its value is being used. The API should have probably been
using uintptr_t all along. Now we have to keep the ABI stable, and
introduce a heaptrack_realloc2 that takes uintptr_t. This is then
leveraged by heaptrack_inject to silence the GCC compiler warning.