Recommit r345127 "[LLDB] - Add support for DW_RLE_base_address and DW_RLE_offset_pair...

Recommit r345127 "[LLDB] - Add support for DW_RLE_base_address and DW_RLE_offset_pair entries (.debug_rnglists)"

With the fix: do not forget to hanlde the DW_RLE_start_end, which seems was
omited/forgotten/removed by mistake.

Original commit message:

The patch implements the support for DW_RLE_base_address and DW_RLE_offset_pair
.debug_rnglists entries

Differential revision: https://reviews.llvm.org/D53140
----
Added : /lldb/trunk/lit/Breakpoint/Inputs/debug_rnglist_offset_pair.yaml
Added : /lldb/trunk/lit/Breakpoint/debug_rnglist_offset_pair.test
Modified : /lldb/trunk/source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp
Modified : /lldb/trunk/source/Plugins/SymbolFile/DWARF/DWARFDebugRanges.cpp
Modified : /lldb/trunk/source/Plugins/SymbolFile/DWARF/DWARFDebugRanges.h
Modified : /lldb/trunk/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
Modified : /lldb/trunk/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.h

llvm-svn: 345251