Give newline token symbolic name; print raw tokens c-escaped. #4691

Job	Run time
KytheVerification	0s
ClangTidy	3m 56s
KytheXrefs	0s
x86_64 test	7m 44s
MacOsBuild	7m 52s
arm64 test	8m 14s
MacOsBuildDevTools	4m 19s
x86_64 test-clang	8m 18s
PrepareVSPlugin	2m 33s
arm64 test-clang	8m 9s
RunBantBuildCleaner	3m 13s
VerifyFormatting	28s
x86_64 test-nortti	7m 33s
x86_64 test-c++20	8m 15s
WindowsBuild	7m 49s
x86_64 test-c++23	8m 13s
x86_64 smoke-test	8m 8s
arm64 smoke-test	8m 15s
x86_64 asan	8m 26s
x86_64 asan-clang	8m 23s
x86_64 compile	4m 39s
arm64 compile	4m 48s
x86_64 compile-clang	4m 2s
arm64 compile-clang	4m 38s
x86_64 compile-static	4m 26s
arm64 compile-static	4m 45s
x86_64 compile-static-clang	4m 10s
arm64 compile-static-clang	4m 49s
x86_64 coverage	8m 18s
x86_64 clean	7m 36s
arm64 clean	7m 31s
📦 Release	1s
Build and deploy GitHub pages	1s
	2h 59m 32s

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