* fixed some CLion "Unused global declaration" warnings
* fixed some CLion "Not implemented function" warnings
* fixed some CLion "Unused struct" warnings
* added TODO
* removed unused parameter reported by CLion
* fixed some CLion "Unused macro" warnings
* fixed some CLion "Condition is always true" warnings and a CLion "The value is never used" warning
* added `Settings::useSingleJob()` and use it instead of checking `jobs` or `jointSuppressionReport`
* extracted single job execution into `SingleExecutor`
* moved `reportStatus()` from `CppCheckExecutor` to Èxecutor
* TestSingleExecutor: improved tests
* added testing of markup extension handling in executors
* cleaned up includes based on `include-what-you-use`
* testsingleexecutor.cpp: suppress `performance-unnecessary-value-param` clang-tidy warnings
* ProcessExecutor: send color via pipe instead of applying it beforehand
* do not unconditionally apply colors to output / disable all colors in tests / adjusted tests for changed output behavior
* fixed precision loss in `Executor::reportStatus()`
* fixed `naming-varname` selfcheck warnings
* avoid potentially duplicated `strTolower()` call in `Path::getFilenameExtensionInLowerCase()`
* avoid unnecessary copies
* use `unordered_*` containers for faster lookups
* symboldatabase.cpp: do not perform call in `checkReturns()` until needed
* astutils.cpp: do not perform calls in `isVariableChangedByFunctionCall()` until necessary
* tokenize.cpp: small `hasIfDef()` optimization
* use `unordered_map` for `CheckUnusedFunctions::FunctionUsage::mFunctions` / adjusted test case
* library: Add optional "type" attribute to "use-retval"
Added an optional "type" attribute to "use-retval" nodes in the
configuration. When the return type of a function configured with
`<use-retval type="error-code"\>` node does not used, the new style
error "ignoredReturnErrorCode" will be generated.
* Fix and improve patch after the initial review
* Fixed severity level and [[nodiscard]] attribute
* Fix incorrect condition
* Remove redundant condition
Format-string arguments are now marked to have `in` direction, except
for `scan`-functions (like `scanf`) where these arguments are explicitly
marked to have `out` direction.
* cppcheck.cpp: Check for JSON error when parsing addon .json files
This fixes that errors in JSON files given via `--addon=*.json` are
silently ignored and maybe only a part of the JSON file is used.
Now the error message which picojson can return is checked and a
corresponding error message is returned again by getAddonInfo().
* naming.json: Fix missing comma
* CLI: Fix naming violations detected by addon naming.py via naming.json
* Addon naming: Add argument for validating names of constants
* LIB: Rename functions/variables so they are valid, loosen naming rules
* GUI: Fix naming violations
* Add indirect to library cfg files
* Check indirect for non null arguments
* Reenable subfunction analysis
* Use indirect 1 when using not-null
* Parse correct string name
* Update documentation
* Make attribute optional