Merge pull request #1593 from rhelmer/bug928145-reland-JSON-stackwalker-changes

Bug928145 reland json stackwalker changes
Revert "Merge pull request #1593 from rhelmer/bug928145-reland-JSON-stackwalker-changes"

This reverts commit fdd31f7d4531a6032a292358e79f5d8d1b383092, reversing
changes made to 4ec56d22abe2e81577ecc70229e8a3bf231bfdb5.
Merge pull request #1594 from lonnen/revert-cubed

Revert "Merge pull request #1593 from rhelmer/bug928145-reland-JSON-stac...
fixes bug 901177 - build system changes for json stackwalker
fixes bug 901177 - no need to rename breakpad to stackwalk anymore
Fixes bug 926078 - updates stackwalker

This reverts commit 2d0486fbcf317f3bb90e2828136befa3a95288e0.