sys-apps/sandbox: disable LTO (#349)

sys-config/ltoize/files/package.cflags/ltoworkarounds.conf

@@ -101,6 +101,7 @@ dev-libs/protobuf *FLAGS-=-flto* #Upstream bug https://github.com/protocolbuffer
 dev-libs/libaio *FLAGS-=-flto* # Issue #314, missing symbols in LTO build compared to non-LTO build, leads to problems with sys-fs/lvm2
 sys-apps/apparmor *FLAGS-=-flto* # Issue #299, ODR violation, still builds and runs on some configurations
 media-libs/mesa *FLAGS-=-flto* # Issue #143, compiles sometimes, but exhibits runtime errors when used with LTO.  AMD and Intel drivers are known to fail.
+sys-apps/sandbox *FLAGS-=-flto* # Issue #347, LTO breaks basic sandboxing functionality
 # END: LTO not recommended
 
 #Packages which Graphite optimizations don't play nice with