Changes are:

• New compile-defined limit LIBRAW_MAX_PROFILE_SIZE_MB: limits allocation/read size for embedded color profile (default: 256Mb)
• Embedded color profile allocation/read size: limited by input file size.
• Multiple fixes (mostly inspired by oss-fuzz) to improve library stability and/or input checks.
• raw-identify: use fallback if PATH_MAX not available
• Disabled color conversion for Canon 16-bit thumbnails
• docs/changelog: explained the case when no thumbnail is found in specific file
• swapXX renamed to libraw_swapXX to avoid name conflict
• better striped thumbnails handling