meta-security: Convert to new override syntax

Signed-off-by: Armin Kuster <akuster808@gmail.com>

recipes-mac/ccs-tools/README

@@ -9,4 +9,4 @@ To start via command line add:
 To initialize:
 /usr/lib/ccs/init_policy
 
-DISTRO_FEATURES_append = " tomoyo"
+DISTRO_FEATURES:append = " tomoyo"

recipes-mac/ccs-tools/ccs-tools_1.8.4.bb

@@ -29,17 +29,17 @@ do_install(){
 
 PACKAGE="${PN} ${PN}-dbg ${PN}-doc"
 
-FILES_${PN} = "\
+FILES:${PN} = "\
     ${sbindir}/* \
     ${base_sbindir}/* \
     ${libdir}/* \
 "
 
-FILES_${PN}-doc = "\
+FILES:${PN}-doc = "\
     ${mandir}/man8/* \
 "
 
-FILES_${PN}-dbg = "\
+FILES:${PN}-dbg = "\
     ${base_sbindir}/.debug/* \
     ${sbindir}/.debug/* \
     ${libdir}/.debug/* \