use FPC LEtoN/BEtoN intrinsics for wire-to-native reads#23
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Replace the hand-rolled {$IFDEF SIMPLEBASELIB_LITTLE_ENDIAN} branches in the six private read-side helpers with FPC's dedicated, self-endian-aware RTL intrinsics:
LeToNativeUInt16/32/64 -> LEtoN
BeToNativeUInt16/32/64 -> BEtoN
The intrinsic is used on FPC; Delphi keeps the existing fallback verbatim via {$ELSE}. Generated little-endian code is unchanged (LEtoN/BEtoN are the identity on LE hosts, a bswap on BE) -- this is an idiomatic/clarity change that drops these functions' reliance on the SIMPLEBASELIB_LITTLE_ENDIAN define and defers the endianness decision to the RTL. All Read* overloads route through these helpers, so the whole read path is covered transitively.
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Replace the hand-rolled {$IFDEF SIMPLEBASELIB_LITTLE_ENDIAN} branches in the six private read-side helpers with FPC's dedicated, self-endian-aware RTL intrinsics:
LeToNativeUInt16/32/64 -> LEtoN
BeToNativeUInt16/32/64 -> BEtoN
The intrinsic is used on FPC; Delphi keeps the existing fallback verbatim via {$ELSE}. Generated little-endian code is unchanged (LEtoN/BEtoN are the identity on LE hosts, a bswap on BE) -- this is an idiomatic/clarity change that drops these functions' reliance on the SIMPLEBASELIB_LITTLE_ENDIAN define and defers the endianness decision to the RTL. All Read* overloads route through these helpers, so the whole read path is covered transitively.