new file:   head.h
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 On branch master
 Changes to be committed:
	new file:   base/dsalgo/gcc_4_1_plus/README
	new file:   base/dsalgo/gcc_4_1_plus/lock_free_queue.cc
	new file:   base/dsalgo/gcc_4_1_plus/lock_free_queue.h
	modified:   base/lib/libdsalgo.a

 Untracked files:
	base/dsalgo_test/common_queue_test
	base/dsalgo_test/entry_test
	base/dsalgo_test/gcc_4_1_plus/
	base/dsalgo_test/hashmap_test
	base/dsalgo_test/linkedlist_test
	base/dsalgo_test/session_pool_test
	base/dsalgo_test/sort_test
	base/dsalgo_test/union_search_set_test