Don't include @LIBS@ in libvirt.pc.in file
Don't include @LIBS@ in libvirt.pc.in file

The libvirt.pc file we install is ending up polluted with a
load of compiler flags that should be private to the libvirt
build. eg

Libs: -L${libdir} -lvirt -ldl -O2 -g -pipe -Wall \
      -Wp,-D_FORTIFY_SOURCE=2 -fexceptions \
      -fstack-protector-strong --param=ssp-buffer-size=4 \
      -grecord-gcc-switches  -m64 -mtune=generic

this is caused by including @LIBS@ in the Libs: line of the
pkgconfig.pc.in file.

Signed-off-by: Daniel P. Berrange <bb938cf255e055ff3507f2627d214e8e62118fcf@redhat.com>

VenkatDatta/libvirt,elmarco/libvirt,shugaoye/libvirt,andreabolognani/libvirt,taget/libvirt,eskultety/libvirt,taget/libvirt,fabianfreyer/libvirt,eskultety/libvirt,fabianfreyer/libvirt,taget/libvirt,fabianfreyer/libvirt,rlaager/libvirt,VenkatDatta/libvirt,crobinso/libvirt,VenkatDatta/libvirt,libvirt/libvirt,jfehlig/libvirt,datto/libvirt,datto/libvirt,jardasgit/libvirt,rlaager/libvirt,datto/libvirt,elmarco/libvirt,agx/libvirt,elmarco/libvirt,agx/libvirt,elmarco/libvirt,crobinso/libvirt,andreabolognani/libvirt,jardasgit/libvirt,rlaager/libvirt,shugaoye/libvirt,crobinso/libvirt,jfehlig/libvirt,VenkatDatta/libvirt,nertpinx/libvirt,olafhering/libvirt,taget/libvirt,zippy2/libvirt,eskultety/libvirt,zippy2/libvirt,libvirt/libvirt,andreabolognani/libvirt,nertpinx/libvirt,datto/libvirt,libvirt/libvirt,shugaoye/libvirt,eskultety/libvirt,shugaoye/libvirt,nertpinx/libvirt,agx/libvirt,fabianfreyer/libvirt,olafhering/libvirt,andreabolognani/libvirt,olafhering/libvirt,zippy2/libvirt,andreabolognani/libvirt,shugaoye/libvirt,jfehlig/libvirt,taget/libvirt,fabianfreyer/libvirt,olafhering/libvirt,libvirt/libvirt,rlaager/libvirt,VenkatDatta/libvirt,crobinso/libvirt,agx/libvirt,agx/libvirt,rlaager/libvirt,jardasgit/libvirt,eskultety/libvirt,nertpinx/libvirt,datto/libvirt,elmarco/libvirt,nertpinx/libvirt,jfehlig/libvirt,jardasgit/libvirt,zippy2/libvirt,jardasgit/libvirt