[jdk11u-dev] RFR: 8253639: Change os::attempt_reserve_memory_at parameter order

[Paul Hohensee]

This is a pre-requisite to the 11u backport of JDK-8255254, see https://github.com/openjdk/jdk11u-dev/pull/578.

No semantic changes, just a parameter reorder.

Applies cleanly net of context, patching os_solaris.cpp in the same manner as os_linux.cpp, and eliminating the original patch's change to split_reserved_memory in os_windows.cpp since attempt_reserve_memory_at is unused therein for 11u.

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Commit messages:
- Backport ca1ed16292492d256d076122d124be8978fce4c3

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/699/files
Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=699&range=00
Issue: https://bugs.openjdk.java.net/browse/JDK-8253639
Stats: 24 lines in 10 files changed: 0 ins; 0 del; 24 mod
Patch: https://git.openjdk.java.net/jdk11u-dev/pull/699.diff
Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/699/head:pull/699

PR: https://git.openjdk.java.net/jdk11u-dev/pull/699