v4: Output mepo status during build

This updates v4 to add a new esma_capture_mepo_status function (in esma_support/esma_mepo_status.cmake) to capture the output of mepo status --hashes when mepo was used to clone the fixture. It will output this into a file MEPO_STATUS.rc which is installed to ${CMAKE_INSTALL_PREFIX}/etc and can be used to help determine the exact state of the fixture at build time.

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From CHANGELOG.md

Added

• Added new esma_capture_mepo_status function (in esma_support/esma_mepo_status.cmake) to capture the output of mepo status --hashes when mepo was used to clone the fixture. It will output this into a file MEPO_STATUS.rc which is installed to ${CMAKE_INSTALL_PREFIX}/etc and can be used to help determine the exact state of the fixture at build time.

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What's Changed

• v4: Add output of mepo status by @mathomp4 in #408
• GitFlow: Merge develop into main for release by @mathomp4 in #409

Full Changelog: v4.7.0...v4.8.0