* Avoid doing a syscall with a nil parameter in fileexists

amicommon: m68k-amiga legacy support

* 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

rtl: remove defines for v2.x compiler from the common part of the RTL. It's no longer suppported to build with that

* 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

* 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

* Char -> AnsiChar

* Char -> AnsiChar

* Char -> AnsiChar

* Char -> AnsiChar

* Char -> AnsiChar

* Char -> AnsiChar

* Char -> AnsiChar

* Char -> AnsiChar

* Char -> AnsiChar

* Char -> AnsiChar

* Char -> AnsiChar

* Char -> AnsiChar

* Char -> AnsiChar

* Char -> AnsiChar

* Char -> AnsiChar

* Char -> AnsiChar

* Char -> AnsiChar

* String -> ansistring

* Synchronize API for AnsiString/Unicode string, keep string where possible.

* Refer to mainunit for lazarus IDE

* Refer to mainunit for lazarus IDE

* String helpers for all string types

* Explicit string types, duplicate where needed

* Fix windows compilation

Add Delphi-compatible TCurrencyHelper

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

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

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

* Dotted RTL compiles

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

rtl: fixed indentation

TMarshal & TMarshaller, strange things from Delphi.

Restore usage of fpexecve function inside ExecuteProcess
as set by commit 305d34a8f6f

* Move TMarshal to system unit

* TStringHelper alias.

* Fix compilation for platforms that do not have unicodestring

Adapt USE_STATX code to FPC_DOTTEDUNITS

Add dotted version of Dos unit in msdos/sysutils source

Add required OS2Api. prefix for dotted units

Add required FPC_DOTTEDUNITS changes

Adapt sources to FPC_DOTTEDUNITS

* Add enumerator for TStringBuilder. Fix issue gitlab 0037088

Amiga: Enable Dotted RTL for Amiga

* 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)

* GetEpochTime (not used though it seems) should return time_t

* 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