Make ksh builds reproducible

[alganet]

No description provided.

[Copilot]

Pull request overview

This pull request implements reproducible builds for ksh (Korn Shell) variants by adding comprehensive build determinism measures and patching source-level non-determinism in floating-point padding.

Changes:

• Added extensive reproducible build flags and environment configuration to the ksh build process including SOURCE_DATE_EPOCH, deterministic compiler flags, and ar/ranlib wrapper scripts
• Introduced source-level patches to zero-initialize long double padding bytes before use to eliminate non-deterministic memory contents in build artifacts
• Added patch utility dependency for 93uplusm fork variants that now require patch application

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
variants/ksh.sh	Implements reproducible build system with tar normalization, timestamp control, compiler flags, ar/ranlib wrappers, meson LTO disable, and binary stripping
patches/ksh/shvrChistory-b_2016-01-10/002-long-double-nan-pad.diff	Patches ksh source to memset long double variables before use to ensure deterministic padding bytes
patches/ksh/shvrChistory-b_2012-08-01/002-long-double-nan-pad.diff	Patches ksh source to memset long double variables before use to ensure deterministic padding bytes
patches/ksh/shvrChistory-b_2011-03-10/002-long-double-nan-pad.diff	Patches ksh source to memset long double variables before use to ensure deterministic padding bytes
patches/ksh/shvrChistory-b_2010-10-26/002-long-double-nan-pad.diff	Patches ksh source to memset long double variables before use to ensure deterministic padding bytes
patches/ksh/shvrChistory-b_2010-06-21/002-long-double-nan-pad.diff	Patches ksh source to memset long double variables before use to ensure deterministic padding bytes
patches/ksh/shvrChistory-b_2008-11-04/002-long-double-nan-pad.diff	Patches ksh source to memset long double variables before use to ensure deterministic padding bytes
patches/ksh/shvrChistory-b_2008-06-08/002-long-double-nan-pad.diff	Patches ksh source to memset long double variables before use to ensure deterministic padding bytes
patches/ksh/shvrChistory-b_2008-02-02/002-long-double-nan-pad.diff	Patches ksh source to memset long double variables before use to ensure deterministic padding bytes
patches/ksh/shvrA93uplusm-v1.0.2/002-long-double-nan-pad.diff	Patches ksh source to memset long double variables before use to ensure deterministic padding bytes