Adding line numbers

In order to add line numbers into scodb:

1. Recompile the desired modules with the cc -g -W0,-d1 options to generate DWARF I format line number debugging information.

2. Relink a new kernel with the recompiled modules.

3. After the new kernel is rebooted, the line number information will be printed out automatically when disassembling the modules which were recompiled with -g -W0,-d1.

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   NOTE: This only works for static parts of the kernel and not dynamically loadable parts.

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