Build

Fix joinPathOS method that fails on solaris #3127

Job	Run time
Linux (linux, jdk8u, temurin, adoptopenjdk/centos7_build_image)	59s
Linux (linux, jdk11u, temurin, adoptopenjdk/centos7_build_image)	56s
Linux (linux, jdk17u, temurin, adoptopenjdk/centos7_build_image)	59s
macOS (macOS, jdk8u, macos-11, temurin)	1m 8s
Linux (linux, jdk, temurin, adoptopenjdk/centos7_build_image)	59s
macOS (macOS, jdk11u, macos-13, temurin)	1m 11s
Linux (alpine-linux, jdk8u, temurin, adoptopenjdk/alpine3_build_image)	57s
Linux (alpine-linux, jdk11u, temurin, adoptopenjdk/alpine3_build_image)	59s
Windows (windows-2022, jdk8u, temurin)	54s
Linux (alpine-linux, jdk17u, temurin, adoptopenjdk/alpine3_build_image)	58s
Windows (windows-2022, jdk11u, temurin)	54s
Linux (alpine-linux, jdk, temurin, adoptopenjdk/alpine3_build_image)	59s
Windows (windows-2022, jdk17u, temurin)	56s
Linux (linux, jdk11u, dragonwell, adoptopenjdk/centos7_build_image)	57s
Windows (windows-2022, jdk, temurin)	56s
Linux (linux, jdk11u, fast_startup, adoptopenjdk/centos7_build_image)	58s
Linux (linux, jdk11u, bisheng, adoptopenjdk/centos7_build_image)	57s
	16m 37s

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