hg: jdk/submit: 8226238: Improve error output and fix elf issues in os::dll_load

[matthias.baesken at sap.com]

Changeset: 19d0b382f086
Author:    mbaesken
Date:      2019-07-02 13:45 +0200
URL:       http://hg.openjdk.java.net/jdk/submit/rev/19d0b382f086

8226238: Improve error output and fix elf issues in os::dll_load
Reviewed-by: clanger, mdoerr

! src/hotspot/os/linux/os_linux.cpp
! src/hotspot/os/solaris/os_solaris.cpp