Add host symlinks for microdump_stackwalk, minidump_*
Add host symlinks for microdump_stackwalk, minidump_*

It's not obvious how to build non-default-toolchain targets in ninja.
Creating a wrapper alleviates the problem.

BUG=none

Review URL: https://codereview.chromium.org/1822743002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#382611}

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