add 8位加法器

adder/incremental_db/README

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+This folder contains data for incremental compilation.
+
+The compiled_partitions sub-folder contains previous compilation results for each partition.
+As long as this folder is preserved, incremental compilation results from earlier compiles
+can be re-used.  To perform a clean compilation from source files for all partitions, both
+the db and incremental_db folder should be removed.
+
+The imported_partitions sub-folder contains the last imported QXP for each imported partition.
+As long as this folder is preserved, imported partitions will be automatically re-imported
+when the db or incremental_db/compiled_partitions folders are removed.
+

adder/incremental_db/compiled_partitions/adder.root_partition.cmp.kpt

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+<kpt_db name="root_partition" kpt_version="1.1">
+  <key_points_set type="reference" hier_sep="|">
+  </key_points_set>
+  <key_points_set type="transition" hier_sep="|">
+  </key_points_set>
+  <key_points_set type="transformed" hier_sep="|">
+  </key_points_set>
+  <transformations_set hier_sep="|">
+  </transformations_set>
+</kpt_db>

adder/incremental_db/compiled_partitions/adder.root_partition.cmp.logdb

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+v1

adder/incremental_db/compiled_partitions/adder.root_partition.map.kpt

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+<kpt_db name="adder.map_bb" kpt_version="1.1">
+  <key_points_set type="reference" hier_sep="/">
+  </key_points_set>
+  <key_points_set type="transition" hier_sep="|">
+  </key_points_set>
+  <key_points_set type="transformed" hier_sep="|">
+  </key_points_set>
+  <transformations_set hier_sep="|">
+  </transformations_set>
+</kpt_db>