Save/load nmethod without going through CodeBuffer #67

Job	Run time
Prepare the run	50s
alpine-linux-x64	0s
docs / build (debug)	2m 38s
linux-x64-hs-minimal / build (debug)	50s
linux-x64 / build (debug)	1m 27s
linux-cross-compile / build (aarch64)	5m 8s
linux-x64 / build (release)	36m 59s
linux-cross-compile / build (arm)	4m 45s
linux-x64-hs-nopch / build (debug)	1m 42s
linux-cross-compile / build (s390x)	4m 2s
linux-x64-hs-optimized / build (debug)	2m 58s
linux-cross-compile / build (ppc64le)	4m 49s
linux-x64-hs-zero / build (debug)	1m 11s
linux-cross-compile / build (riscv64)	3m 43s
linux-x86-hs / build (debug)	1m 39s
macos-aarch64 / build (debug)	1m 35s
linux-x86-hs / build (release)	13m 43s
macos-aarch64 / build (release)	1m 21s
macos-x64 / build (debug)	6m 30s
macos-x64 / build (release)	8m 48s
windows-aarch64 / build (debug)	4m 52s
windows-aarch64 / build (release)	4m 56s
windows-x64 / build (debug)	11m 0s
windows-x64 / build (release)	12m 35s
macos-aarch64	0s
macos-x64	0s
windows-x64	0s
linux-x64	0s
	2h 18m 1s

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