Merge pull request microsoft#1654 from Microsoft/master

don't repeatedly mark the c_cpp_properties.json file as dirty on Windows

Merge pull request microsoft#1557 from Microsoft/master

Merge for release.

Change for insiders.

Merge remote-tracking branch 'origin/master' into release

Add setting to throttle workspace parsing. (microsoft#1389)

Add workspaceParsingPriority and exclusionPolicy settings.

Merge pull request microsoft#1336 from Microsoft/ronglu-edit

updated links

Merge pull request microsoft#1336 from Microsoft/ronglu-edit

updated links

Update launch.md

Fix description

Update launch.md

Update launch.md