It turns out that running makecab to compress PDB files takes a significant
amount of time in the buildsymbols step. I wrote an implementation of
makecab in Rust that implements only the subset of features we use and
it's significantly faster:
https://github.com/luser/rust-makecab
This patch adds a makecab check to moz.configure, adds a release build of
the makecab binary to the Windows tooltool manifests, points the build at
it from mozconfig.win-common, and changes symbolstore.py to use MAKECAB
from substs instead of calling `makecab.exe` directly.
MozReview-Commit-ID: 76FHLIZFCXS
--HG--
extra : rebase_source : af4cf2e4db4607ec9329b2811cc0175d3e113b66
