Fix C++ auto-increment macro symbol collisions - #5836
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Description of Changes
Closes: #5772
The original design for C++ auto-increment field macros used LINE to generate symbols. This caused collisions if two table definitions were in separate files with an auto-increment field on the same line number.
API and ABI breaking changes
No breaking changes.
Expected complexity level and risk
2 - Small macro changes and small compile test
Testing
module-test-cppbuilds correctly