SysUtils: add ExpandFileName with a BasePath overload

* provided additional information in comments in the include file header

* rename generic TStringBuilder to TGenericStringBuilder to make code tools happy

* fix for Mantis 0038390: use Val instead of StrToInt to avoid overload problems
+ added test

* use Str instead of IntToStr to avoid overload problems with unsigned types

* Patch from Zeljko Avramovic to extend ordinal/float helpers

* fixed compilation for i8086 and 8-bit targets after gitlab 0049622. The conditional
ifdef checks for the ordinal helpers rewritten to be less dependendant on
defines, such as CPU16/CPU32/CPU64 and instead use sizeof(integer),
sizeof(nativeint) and sizeof(nativeuint)

* TEncoding.GetEncoding - create unicode encodings, not only MBCS

* TEncoding.GetEncoding - create unicode encodings, not only MBCS

+ implemented SysUtils.FileGetDate for WASI

+ implemented FindFirst, FindNext and FindClose in SysUtils for the WASI platform

* fix bootstrapping wtih 3.2.2 and -Cpcoreavx2

* adjust ToInteger of the Boolean helpers so that it returns the value of either True or False, but not any other value (e.g. in the *Bool types). This is not only Delphi compatible, but also fixes the compilation problem of the one or other 32-bit platform (like PowerPC) after e65b822a.

* Change return type of some functions, so -1 can actually be returned, patch by Zeljko Avramovic (issue 39268).

* Avoid memory allocation in IsNullOrWhitespace. Fix issue gitlab 0039702

* fix SysUtils.HashName as proposed by Awkward in gitlab 0039827, resolves gitlab 0039827
* adapted to syscodepages.inc for the fixed HashName

* part of last commit

* patch by Rika: optimize TStringHelper.StartsWith / EndsWith, resolves gitlab 0039706

* prettier casing of Str* functions, resolves gitlab 0039879

* patch by Bart B: FormatFloat correctly outputs NaN now, resolves gitlab 0032868
+ test

* Optimization of TStringHelper.Split by Rika. Fixes issue gitlab 0039948

* Implement case-insensitive version of Equals & Contains. Fix issue gitlab 0040029

* Char -> AnsiChar

* Refer to mainunit for lazarus IDE

* Refer to mainunit for lazarus IDE

* String helpers for all string types

* Explicit string types, duplicate where needed

Add Delphi-compatible TCurrencyHelper

* PChar -> PansiChar

* (Hopefully) fix compilation for non-win,non-unix platforms

* Fix TDateTimeInfoRec

Fix sysutils unit compilation failure for wasm32-wasi wince and possibly more targets

* patch by Rika: Implement TCurrencyHelper.Ceil/Floor, resolves gitlab 0040134

* fix gitlab 0040293: have the SysUtils unit use the TArray<> declaration in the ObjPas unit instead of declaring it again

rtl: fixed indentation

* PAnsiChar version of Strdispose must be public

TMarshal & TMarshaller, strange things from Delphi.

* Move TMarshal to system unit

* TStringHelper alias.

* Fix compilation for platforms that do not have unicodestring

Fix order of parameters of FillChar

* Add enumerator for TStringBuilder. Fix issue gitlab 0037088

* Small improvement

* Some optimizations for FloatToStr (20% gain). Fixes issue gitlab 0040137

* Add boolean %b format specifier

* Add some methods to TFormatSettings for Delphi compatibility

* Make sure it compiles with 3.2.2

* Make explicit how much better FPC is when compared to Delphi ;)

Replace TEncoding.FLock with interlocked operations.

Add potentially required barriers to TEnconding.

* Add ChangeFilePath

* Fix string type in AnsiLastChar declaration

* Add unicode AnsiLastChar overload

* Some delphi compatibility issues solved (PtrToNil and TGUID operator)

* fix for drive existence in windows app modus, closes gitlab 0040558

* typo fix in previous commit relating to gitlab 0040558

* Some code cleanup in Extract* functions. Fixes issue gitlab 0040587

* Correct casing. Fixes gitlab 0040589

* Introduce fmShareNoLocking to disable locking of file descriptors on unix

* Use value for fmShareNoLocking which does not overlap with classes fmCreate

* Correct TCharArray declaration, disambiguate between widechar/char

* Select proper stringbuilder depending on size of char

* Added Delphi-compatible overload for ToString with UpdateCapacity argument

* force correct strpas overload when using unicodestrings

Let “Trim”s return string uncopied.

Without a copy in most cases

* Reflow code for clarity

Taking advantage of fpc_ansistr_concat_multi

without copy

* Merge request !710

* Delphi compatibility: ListIndexErrorMsg

const array - reducing unnecessary data copying

Move Int128Rec to System; remove i386 and x86_64 CPU unit dependency on SysUtils.

* Add RangeIndexError (delphi compatible)

* remove outdated defines, resolves gitlab 0040897

* Allow %o, let %p handle object pointers and class pointers. Fixes issue gitlab 0040762

* fix gitlab 0040305: with type helpers now supporting inheriting from unique type aliases, declare a TRealHelper as a descendant of TDoubleHelper (cause Real is a Double)
+ added test

Make SysUtils' TSystemTime declaration on non-Windows platforms compatible with the Win32 and Delphi declarations

* Adding new generic Extract and Swap function to RTL

These allow to move data from one variable to another without triggering
the copy operation. Extract makes use of the newly introduced move
semantic for function results and Swap uses System.Move to not trigger
the copy mechanism.

* Add Delphi-Compatible new findCmdLineSwitch overload

Don’t use explicit Move in Extract and Swap.

* leave GetFileContents() early if the file size is 0 to avoid a range error if the RTL is compiled with range checks

* Extend GetLocalTimeOffset to return Dst or not

* Allow TFormatSettings.Create with string (using callback)

const for TFormatSettings

* use sametext instead of converting case

* LLVM workaround

* Correct compare helper. Fix issue gitlab 0041338

* Optimization by Bart. Fixes issue gitlab 0040150

* In case of no DST, DST timezone offset must equal normal timezone offset

* Use last invalid type cast info in EInvalidCast exception

Add case-sensitive TStringHelper.Contains for Delphi compatibility

* Fix Contains signaturen remove double

* Need to put () when calling an overloaded function with same name. Fixes issue gitlab 0041634