[dev.typeparams] all: merge master (690a8c3f) into dev.typeparams

Merge List:

+ 2021-05-18 690a8c3f make.bash: fix misuse of continue
+ 2021-05-18 8b0901fd doc/go1.17: fix typo "avoding" -> "avoiding"
+ 2021-05-18 5e191f8f time: rewrite the documentation for layout strings
+ 2021-05-17 bfe3573d go/token: correct the interval notation used in some panic messages
+ 2021-05-17 a2c07a9a all: update golang.org/x/net to latest
+ 2021-05-17 b9b2bed8 syscall: some containers may fail syscall.TestSetuidEtc
+ 2021-05-17 b1aff429 cmd/go: don't print 'go get' deprecation notices in the main module
+ 2021-05-17 bade6808 runtime/cgo: fix crosscall2 on ppc64x
+ 2021-05-15 ce92a202 cmd/go: error out of 'go mod tidy' if the go version is newer than supported
+ 2021-05-14 02699f81 runtime: mark osyield nosplit on OpenBSD
+ 2021-05-14 3d324f12 net/http: prevent infinite wait during TestMissingStatusNoPanic
+ 2021-05-14 0eb38f2b cmd/go/internal/load: override Package.Root in module mode
+ 2021-05-14 a938e529 cmd/go: fix a portability issue in the cd script command
+ 2021-05-14 d137b745 cmd/go: fix spacing in help text of -overlay flag
+ 2021-05-14 c925e154 cmd/internal/obj/arm64: disable AL and NV for some condition operation instructions
+ 2021-05-14 12d383c7 debug/macho: fix a typo in macho.go
+ 2021-05-14 3a045351 all: fix spelling
+ 2021-05-13 b4833f7c cmd/link: always mark runtime.unreachableMethod symbol
+ 2021-05-13 92c189f2 cmd/link: resolve ABI alias for runtime.unreachableMethod
+ 2021-05-13 7a7624a3 cmd/go: permit .tbd files as a linker flag
+ 2021-05-13 cde2d857 cmd/go: be less strict about go version syntax in dependency go.mod files
+ 2021-05-13 2a61b3c5 regexp: fix repeat of preferred empty match
+ 2021-05-13 fd4631e2 cmd/compile/internal/dwarfgen: fix DWARF param DIE ordering
+ 2021-05-13 a63cded5 debug/dwarf: delay array type fixup to handle type cycles
+ 2021-05-13 0fa2302e cmd/vendor: update golang.org/x/sys to latest
+ 2021-05-13 2c76a6f7 all: add //go:build lines to assembly files
+ 2021-05-12 6db7480f cmd/go/internal/modload: in updateLazyRoots, do not require the main module explicitly
+ 2021-05-12 f93b951f cmd/compile/abi-internal.md: fix table format
+ 2021-05-12 3b321a9d cmd/compile: add arch-specific inlining for runtime.memmove
+ 2021-05-12 07ff5964 runtime/internal/atomic: add LSE atomics instructions to arm64
+ 2021-05-12 03886707 runtime: fix handling of SPWRITE functions in traceback
+ 2021-05-12 e03383a2 cmd/link: check mmap error
+ 2021-05-12 af0f8c14 cmd/link: don't cast end address to int32
+ 2021-05-12 485474d2 cmd/go/testdata/script: fix test failing on nocgo builders
+ 2021-05-12 1a0ea1a0 runtime: fix typo in proc.go
+ 2021-05-11 9995c6b5 cmd/go: ignore implicit imports when the -find flag is set

Change-Id: I843fe029b8ac09424a83e8a4e8bdcc86edd40603