git: openjdk/mobile: 8191521: handle long relative path specified in -Xbootclasspath/a on windows

[duke]

Changeset: 98a2c05b
Author:    Ralf Schmelter <rschmelter at openjdk.org>
Date:      2019-10-01 14:09:44 +0000
URL:       https://github.com/openjdk/mobile/commit/98a2c05b

8191521: handle long relative path specified in -Xbootclasspath/a on windows

Reviewed-by: ccheung, clanger

! src/hotspot/os/windows/os_windows.cpp
! test/hotspot/gtest/runtime/test_os_windows.cpp
! test/hotspot/jtreg/runtime/LoadClass/LongBCP.java