Add strip mode mini-debug-info.

Mini-debug-info strip mode strips most debug information, but
maintains minimal debugging information similar to
https://sourceware.org/gdb/onlinedocs/gdb/MiniDebugInfo.html.

Bug: 27923447

Change-Id: I0405f0b3c33cb3cadeafbd22ce94d645c4dbe7b9
2 files changed