8184309: Buld warnings from GCC 7.1 on Fedora 26
Reviewed-by: kbarrett, vlivanov

8182299: Enable disabled clang warnings, build on OSX 10 + Xcode 8
8182656: Make the required changes in GC code to build on OSX 10 + Xcode 8
8182657: Make the required changes in Runtime code to build on OSX 10 + Xcode 8
8182658: Make the required changes in Compiler code to build on OSX 10 + Xcode 8
Reviewed-by: jwilhelm, ehelin, phh
Contributed-by: phh <hohensee@amazon.com>, jwilhelm <jesper.wilhelmsson@oracle.com>

8181449: Fix debug.hpp / globalDefinitions.hpp dependency inversion
Summary: Refactor debug.hpp and reverse include dependency.
Reviewed-by: coleenp, stefank, dcubed

8166930: minor cleanups 1) remove reference to ZIP_ReadMappedEntry 2) checking of st_mode
Reviewed-by: jiangli, lfoltan

8157948: UL allows same log file with multiple file=
Reviewed-by: dholmes, rehn

8153074: UL: Show output option in VM.log jcmd
Reviewed-by: dholmes, mlarsson

8145934: Make ttyLocker equivalent for Unified Logging framework
Reviewed-by: rprotacio, stuefe, jrose

8153073: UL: Set filesize option with k/m/g
Reviewed-by: mlarsson, dholmes

8154921: Fix aix after "8146879: Add option for handling existing log files in UL"
Summary: Rename os::fileno to os::get_fileno because AIX defines macro 'fileno'.
Reviewed-by: coleenp

8146879: Add option for handling existing log files in UL
Reviewed-by: dsamersoff, gziemski, rehn

8148425: strerror() function is not thread-safe
Reviewed-by: dholmes, coleenp

8145294: TestLogRotation.java triggers a race in the UL framework
Reviewed-by: sla, mgronlun

8140556: Add force rotation option to VM.log jcmd
Summary: Rotate JVM log files via jcmd
Reviewed-by: sla, mlarsson

8137260: fix warning after "8046148: JEP 158: Unified JVM Logging"
Reviewed-by: mlarsson, stuefe

8046148: JEP 158: Unified JVM Logging
Reviewed-by: coleenp, sla