Add a tool to convert kernel minidump to elf coredump

[borako.ozarslan_gmail.com]

Summary

Add a tool that converts a given kernel minidump to elf coredump format
so that gdb or lldb can directly read this instead of learning about
the special format.

submitted by: Bora Ozarslan [e-mail]

[borako.ozarslan_gmail.com]

Added a man page

[emaste]

tools/tools/minidump_to_elf/minidump-to-elf.1

1

Copy-pasteo

[emaste]

tools/tools/minidump_to_elf/main.c

152

we may want to avoid modifying libkvm (we can just open the kernel again and call elf_begin).