Renames the constant to be less verbose and better reflect its purpose:
it represents the size of the storage header that precedes serialized block data on disk,
not to be confused with a block's own header.
-BEGIN VERIFY SCRIPT-
git grep -q "STORAGE_HEADER_BYTES" $(git ls-files) && echo "Error: Target name STORAGE_HEADER_BYTES already exists in the codebase" && exit 1
sed -i 's/BLOCK_SERIALIZATION_HEADER_SIZE/STORAGE_HEADER_BYTES/g' $(git grep -l 'BLOCK_SERIALIZATION_HEADER_SIZE')
-END VERIFY SCRIPT-