make.bash: stricter selinux test
make.bash: stricter selinux test

SELinux can be installed but not turned on.
Don't complain unless it is actually turned on.

https://bugzilla.redhat.com/show_bug.cgi?id=652987#c20

R=agl
CC=golang-dev
http://codereview.appspot.com/3979044

ssrl/go,pombredanne/go-deleteme,tv42/old-go,pombredanne/go-deleteme,gnanderson/go,gnanderson/go,dsriram/golang,pombredanne/go-deleteme,tv42/old-go,dsriram/golang,gnanderson/go,dsriram/golang,apparentlymart/golang,apparentlymart/golang,apparentlymart/golang,apparentlymart/golang,dsriram/golang,ssrl/go,gnanderson/go,dsriram/golang,apparentlymart/golang,apparentlymart/golang,apparentlymart/golang,ssrl/go,tv42/old-go,pombredanne/go-deleteme,pombredanne/go-deleteme,gnanderson/go,tv42/old-go,pombredanne/go-deleteme,pombredanne/go-deleteme,dsriram/golang,ssrl/go,tv42/old-go,ssrl/go,tv42/old-go,dsriram/golang,ssrl/go,tv42/old-go,gnanderson/go,gnanderson/go,ssrl/go