RFR: 8290706: Remove the support for inline contiguous allocations

[Aleksey Shipilev]

See the bug for rationale and link to RFC.

This removes the 3rd allocation path (first two being TLAB and native GC interface), that is used by Serial/Parallel when TLABs are not available. There is little sense in keeping this code, especially since it requires supporting a bunch of platform-specific assembly.

Additional testing:
 - [x] Linux x86_64 fastdebug `tier1`
 - [x] Linux x86_32 fastdebug `tier1`
 - [x] Linux x86_64 Zero build
 - [x] Linux AArch64 cross-build (attn @theRealAph, @adinn)
 - [x] Linux ARM cross-build (attn @bulasevich, @snazarkin)
 - [x] Linux S390X cross-build (attn @backwaterred, @RealLucy)
 - [x] Linux PPC64 cross-build (attn @TheRealMDoerr, @reinrich)
 - [x] Linux RISC-V cross-build (attn @RealFYang)

Apart from x86, I only verified the cross-compilation builds pass, no other testing is done.

I did not touch the JVMCI interfaces, since I am not sure what is the proper protocol for JVMCI changes.

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Commit messages:
 - Work

Changes: https://git.openjdk.org/jdk/pull/9576/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9576&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8290706
  Stats: 1007 lines in 45 files changed: 3 ins; 961 del; 43 mod
  Patch: https://git.openjdk.org/jdk/pull/9576.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9576/head:pull/9576

PR: https://git.openjdk.org/jdk/pull/9576