Fix MIN/MAX macro conflicts with system headers

[takologi]

The project failed to compile with modern build tools due to macro conflicts and duplicate definitions. Specifically, lowercase min/max macros clashed with the standard library’s std::min/std::max, and ROTR was defined in multiple files under the same name. This caused ambiguous references and build errors.

Summary of Changes:

• Renamed lowercase min/max macros to uppercase to avoid conflicts with std::min/std::max.
• Renamed ROTR macro definitions to different names (ROTR_32, ROTR_SIZEOF), thus eliminating duplicates.

This change restores buildability and reliability for developers using up-to-date build tools.