Remove libsigar/include from nmetrics' AM_CPPFLAGS.
Remove libsigar/include from nmetrics' AM_CPPFLAGS.

- Libsigar should be installed on the system, and so the apps
  should not have lib/libsigar/include in their -I options
  in CPPFLAGS.


alco90/soml,alco90/soml,lees0414/EUproject,alco90/soml,mytestbed/oml,lees0414/EUproject,lees0414/EUproject,mytestbed/oml,mytestbed/oml,lees0414/EUproject,lees0414/EUproject,alco90/soml,alco90/soml,mytestbed/oml,mytestbed/oml