libpcre: move from meta-moblin to meta and update to 8.10

Move the libpcre from meta-moblin, update to the latest release and enable
native build.

Signed-off-by: Joshua Lock <josh@linux.intel.com>

meta/packages/libpcre/libpcre_8.10.bb

@@ -49,3 +49,5 @@ python populate_packages_prepend () {
 
 FILES_${PN} = "${libdir}/libpcre.so.*"
 FILES_${PN}-dev += "${bindir}/*"
+
+BBCLASSEXTEND = "native"