[dev.typeparams] all: merge master (16e82be4) into dev.typeparams

Merge List:

+ 2021-06-21 16e82be4 runtime: fix crash during VDSO calls on PowerPC
+ 2021-06-21 2e542c3c runtime/pprof: deflake TestMorestack more
+ 2021-06-21 ced0fdba doc/go1.17: note deprecation of 'go get' for installing commands
+ 2021-06-21 7a5e7047 doc/go1.17: add Go 1.18 pre-announcements
+ 2021-06-21 85a2e24a doc/go1.17: add security-related release notes
+ 2021-06-21 1de33299 doc/go1.17: document go/parser.SkipObjectResolution
+ 2021-06-21 117ebe0f cmd/go: do not require the module cache to exist for 'go mod edit'
+ 2021-06-20 460900a7 os/signal: test with a significantly longer fatal timeout
+ 2021-06-19 b73cc4b0 database/sql: do not rely on timeout for deadlock test
+ 2021-06-18 86743e7d image: add RGBA64Image interface
+ 2021-06-18 94011721 runtime: clarify Frames.Next documentation
+ 2021-06-18 57aaa19a runtime: disable CPU profiling before removing the SIGPROF handler
+ 2021-06-18 6f22d2c6 doc/go1.17: fix typo
+ 2021-06-17 45f251ad cmd/pprof,runtime/pprof: disable test on more broken platforms
+ 2021-06-17 ed834853 cmd/go: replace a TODO with an explanatory comment
+ 2021-06-17 4dede025 cmd/pprof: make ObjAddr a no-op
+ 2021-06-17 97cee43c testing: drop unusual characters from TempDir directory name
+ 2021-06-17 b0355a3e time: fix receiver for Time.IsDST method
+ 2021-06-17 881b6ea7 doc/go1.17: fix redundant space
+ 2021-06-16 0e67ce3d cmd/go: in lazy modules, add transitive imports for 'go get' arguments
+ 2021-06-16 6ea2af08 cmd/go: add a regression test for #45979
+ 2021-06-16 a294e4e7 math/rand: mention half-open intervals explicitly
+ 2021-06-16 a6a853f9 cmd/asm: restore supporting of *1 scaling on ARM64

Change-Id: Ifdcb817fd44b4fa9c477042b41da55d1d769b016