Rename "port.h" to "portability.h" to avoid conflict with system header file name,
and include the file in "Makefile.am".


server-tools/instance-manager/Makefile.am:
  Ensure that the (recently added) header "portability.h" (renamed from "port.h") gets included in the source packages.
server-tools/instance-manager/guardian.cc:
  Rename "port.h" to "portability.h" to avoid conflict with system header file name.
server-tools/instance-manager/instance.cc:
  Rename "port.h" to "portability.h" to avoid conflict with system header file name.
server-tools/instance-manager/instance_options.h:
  Rename "port.h" to "portability.h" to avoid conflict with system header file name.
server-tools/instance-manager/listener.cc:
  Rename "port.h" to "portability.h" to avoid conflict with system header file name.
server-tools/instance-manager/log.cc:
  Rename "port.h" to "portability.h" to avoid conflict with system header file name.
server-tools/instance-manager/mysqlmanager.vcproj:
  Rename "port.h" to "portability.h" to avoid conflict with system header file name.
server-tools/instance-manager/options.cc:
  Rename "port.h" to "portability.h" to avoid conflict with system header file name.
server-tools/instance-manager/parse_output.cc:
  Rename "port.h" to "portability.h" to avoid conflict with system header file name.
server-tools/instance-manager/portability.h:
  Adapt the protective CPP symbol to the changed file name.
server-tools/instance-manager/priv.cc:
  Rename "port.h" to "portability.h" to avoid conflict with system header file name.
server-tools/instance-manager/priv.h:
  Rename "port.h" to "portability.h" to avoid conflict with system header file name.