- Forcing DWARF3 since libdwarf (from MIT-licensed elftoolchain) doesn't support DWARF4 (which clang 3.5+ defaults to). Can cause binary size regression.
- Extended TestPAL to test crashes/fatal logs.
- Rearranged switches so deoptimizing switches are only applied to debug builds (development still have meaningful info in debugger).
#coderview Bob.Tellez, Josh.Markiewicz
[CL 2559036 by Dmitry Rekman in Main branch]