Summary of Changes

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This pull request significantly enhances Xmake's binutils module by adding native, robust support for extracting runtime search path (rpath) information from ELF and Mach-O executable files. This new capability is seamlessly integrated into the Xmake Lua API, providing a more efficient and self-contained method for querying rpaths, complementing existing external tool-based approaches. The changes also include minor code style updates and defensive programming enhancements to improve code quality and maintainability.

Highlights

• New RPATH Listing Functionality: Introduced native C implementations to efficiently read runtime search path (rpath) and runpath entries from both ELF and Mach-O binary files.
• Lua API Integration: The newly developed rpath listing functionality has been exposed to the Xmake Lua API through binutils.rpath_list, allowing for direct programmatic access.
• Enhanced RPATH Detection: The utils.binary.rpath.list module now incorporates the new native binutils implementation, improving its ability to detect rpaths and potentially reducing reliance on external system tools.
• Code Style and Robustness Improvements: Minor comment style updates from /* ... */ to // ... have been applied across several header files, and defensive programming practices were enhanced by zero-initializing structs in readsyms.c.

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