[ros-dev] debug symbols in DBG build

[Royce Mitchell III]

Thanks to the help of arty and GvG, I have prepared this patch that 
allows SYM files to be loaded and used in stack traces in a DBG build ( 
they used to only be available from KDBG ).

If nobody objects, I will commit, but due to the nature of the patch I 
wanted to find out if there was a good reason why this might be a bad 
thing, first.

Note that this doesn't put SYM files in bootcd nor livecd, and it 
doesn't copy them via make install. The SYM files still need to be 
installed manually.