For file & line breakpoints, if there are subsets of contiguous line table entries for the specified line, set the
breakpoint on the first one of each of the contiguous sub-sets of entries, and not all the others.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@176846 91177308-0d34-0410-b5e6-96231b3b80d8