cpio improvements and fixes

[Shreenidhi Shedi]

Hi All,

I have done some fixes and improvements in cpio code. It will be nice to have these changes in upstream code.

Please find the attached patch files and review the changes.

Thanks,

Shedi

0001-Add-header-guard-to-all-header-files.patch
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0002-Remove-L-from-files-redundant-empty-lines.patch
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0004-Use-the-safer-alternative-snprintf-instead-of-sprint.patch
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0003-Format-specifier-fixes.patch
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0005-Enclose-sizeof-parameter-in-braces.patch
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0006-Remove-redundant-condition-check.patch
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0007-Optimize-ds_resize-logic.patch
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0008-Reformat-refactor-userspec.c.patch
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0010-Optimize-cpio_realloc_c_name-logic.patch
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0009-Use-destination-size-in-strncpy-to-avoid-stringop-ov.patch
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0011-Use-strtol-instead-of-atoi.patch
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0012-Use-void-where-functions-don-t-take-any-arguments.patch
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