Fix DWARF line-number generation for JITed methods.

Don't strip, repack or compress debug-info if explicitly
requested by the developer (using the -g compiler flag).

If enabled, the DWARF debug info has about 1:1 size
overhead relative to JIT code + data.

Bug: 131422204
Test: Check that gdb shows line numbers for JITed method.
Test: Hard-code always-enable generation and run maps.
Change-Id: If06de8ae2317af4d57d84e8a8bfae86a597dd4e4
4 files changed