nmon_13g: add -ltinfo linker flag

* ld in latest binutils-2.22 from oe-core doesn't have
  --copy-dt-needed-entries enabled by default anymore see:
  http://sourceware.org/cgi-bin/cvsweb.cgi/~checkout~/src/ld/NEWS?rev=1.121&content-type=text/plain&cvsroot=src&only_with_tag=binutils-binutils-2_22


  so we have to be more carefull which libs are specified on linker
  command line, similar issue is in mplayer2 and aurora-daemon (qt4)

Signed-off-by: Norman Schleicher <NormanSchleicher@gmx.de>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>