ADD timsort-int and TimSort using sort.Interface
DEL duplicated comments to package
ADD some bench-mark testing
MOD the standard sorting benchmark to using slice of record
FIX a typo mistake of record
ADD benchmarks for int timsort
FIX a typo mistake of tim as time
FIX the bug in TimSort and IsSorted
ADD testcases of TestRandom1MTS and TestBentleyMcIlroyTS for TimSort
MOD optimize the benchmark
Merge pull request #3 from daviddengcn/master

TimSort for sort.Interface; special sorting for []int