bug 1408836 - update sccache to 0.2.2 to fix a Rust caching regression from Rust 1.20. r?glandium MozReview-Commit-ID: K7dAk6wLGl7

Bug 1411525 - use BufferReader in flac/ogg parser. r?kinetik MozReview-Commit-ID: 5chnxLnpqmY

Bug 1256608 - Set replace malloc ldflags from moz.configure and delete replace-malloc.mk MozReview-Commit-ID: 4v7IIcty5vf

Bug 1256608 - Hook `open` as seen from moz.configure to add read files to configure's dependencies. MozReview-Commit-ID: 7MC51ma2dXP

bug 1408836 - update sccache to 0.2.2 to fix a Rust caching regression from Rust 1.20. r?glandium MozReview-Commit-ID: K7dAk6wLGl7

Bug 1409876 - Print warning when vcs operations aren't running on a cache or volume; r?dustin A lot of effort has been spent optimizing VCS operations for peak performance. But not utilizing caches or volumes for the VCS store or checkouts can undermine that work. Let's print a warning when VCS is configured sub-optimally. I'm pretty sure we still have some rogue tasks not using caches or volumes. We can convert this to a fatal error once those are fixed. MozReview-Commit-ID: C6CT1zViy75

Bug 1409876 - Refuse to perform a VCS checkout into a cache root; r?dustin This seems like a reasonable thing to enforce. MozReview-Commit-ID: 3BZQSkwRYeN

Bug 1409876 - Record cache history to aid failure analysis; r?dustin We introduce a per-cache .cachelog file containing important events in the cache's history such as creation, requirements adjusting, and utilization. If cache validation fails, we print the cache log. If a previous task was responsible for getting the cache in a bad state, its TASK_ID should be printed, allowing us to more easily identify mis-configured tasks. MozReview-Commit-ID: BJun5Hi5w0s

Bug 1411786 - Use mozilla::Atomic for the recycled size count. r?njn

Bug 1411786 - Rename chunk recycling-related globals. r?njn

Bug 1411786 - Make the chunk size and recycle limit constant. r?njn Bug 1403843 made more things constant, but missed a few that don't depend on the page size.

Bug 1411786 - More tidying of chunk allocation and recycling code. r?njn - Move variable declarations to their initialization. - Remove gotos and use RAII.

Bug 1411786 - Rename chunk_{recycle,record,alloc,dealloc} arguments. r?njn Also reformat a few things clang-format left out.

Bug 1411786 - clang-format chunk_{recycle,record,alloc,dealloc}. r?njn

Bug 1411786 - Use globals for chunk recycling. r?njn The chunk_recycle and chunk_record functions are never called with different red-black trees than the globals, so just use them directly instead of passing them as argument. The functions were already using the associated global mutex anyways. At the same time, rename them.

Bug 1411786 - Don't call chunk_recycle for base allocations. r?njn Instead of calling it with a boolean indicating whether the call was for base allocations or not, and return immediately if it was, avoid the call altogether.

Bug 1411796 - [taskgraph] Skip parameters.rst doc verification if parameters.strict is False, r?dustin This is needed to prevent parameter mismatch errors when using |mach try fuzzy| from an older revision. This can happen if the parameters.yml is being downloaded from a commit with a recently added parameter. MozReview-Commit-ID: 4NxCM7i8B4W

Bug 951793 - Add overscroll-behavior to the layer dump. r=kats MozReview-Commit-ID: 629DKmrbVIi

Bug 951793 - Obey overscroll-behavior for swipe navigation. r=mstange MozReview-Commit-ID: i2BuiAfG71

Bug 951793 - Obey overscroll-behavior for any overscroll effect. r=kats MozReview-Commit-ID: HyATx3aCmmm