src: fix pkg-config path for API XML files

The API XML files are generated files, so live in the build dir not the
source dir.
Reviewed-by: NPavel Hrdina <phrdina@redhat.com>
Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>

src/libvirt-lxc.pc.in

@@ -7,7 +7,7 @@ exec_prefix=@abs_top_builddir@
 libdir=@abs_top_builddir@/src/.libs
 includedir=@abs_top_builddir@/include
 source_includedir=@abs_top_srcdir@/include
-datarootdir=@abs_top_srcdir@
+datarootdir=@abs_top_builddir@
 
 libvirt_lxc_api=@datadir@/docs/libvirt-lxc-api.xml
 

src/libvirt-qemu.pc.in

@@ -7,7 +7,7 @@ exec_prefix=@abs_top_builddir@
 libdir=@abs_top_builddir@/src/.libs
 includedir=@abs_top_builddir@/include
 source_includedir=@abs_top_srcdir@/include
-datarootdir=@abs_top_srcdir@
+datarootdir=@abs_top_builddir@
 
 libvirt_qemu_api=@datadir@/docs/libvirt-qemu-api.xml
 

src/libvirt.pc.in

@@ -7,7 +7,7 @@ exec_prefix=@abs_top_builddir@
 libdir=@abs_top_builddir@/src/.libs
 includedir=@abs_top_builddir@/include
 source_includedir=@abs_top_srcdir@/include
-datarootdir=@abs_top_srcdir@
+datarootdir=@abs_top_builddir@
 
 libvirt_api=@datadir@/docs/libvirt-api.xml