Added -Wno-portability to AM_INIT_AUTOMAKE
Added -Wno-portability to AM_INIT_AUTOMAKE

 * This option is already used in the gnome-autogen.sh, so there shouldn't be
   any problem in adding it also in our automake initialization. This change
   will avoid portability warnings when re-compiling the project after some
   Makefile.am changes (the option from gnome-autogen.sh only applies to the
   first bootstrap).

hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker