Tweak READMEs and use markdown

native/advertise/README.md

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+# Using mod_advertise
+
+The source can be build with an installed version of httpd-2.4.x, please make
+sure it's configured with `--enable-advertise` flag.
+
+```bash
+sh buildconf
+./configure --with-apache=apache_installation_directory
+make
+```
+
+The `mod_advertise.so` needs to be copied to `apache_installation_directory/modules`
+
+Configuration use something like the following in httpd.conf:
+
+```
+LoadModule advertise_module modules/mod_advertise.so
+ServerAdvertise on
+AdvertiseGroup 232.0.0.2
+AdvertiseFrequency 30
+```
+
+Note: default port is 23364.

native/selinux/README.md

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+# SELinux policies
+
+To compile policies run `make -f /usr/share/selinux/devel/Makefile`
+
+To install policies run `semodule -i mod_cluster.pp`
+
+To remove them run `semodule  -r mod_cluster`
+
+In order to be able to listen and advertise on the default port execute
+
+```bash
+semanage port -a -t http_port_t -p udp 23364
+semanage port -a -t http_port_t -p tcp 6666
+```
+
+To revert the previous run
+
+```bash
+semanage port -d -t http_port_t -p udp 23364
+semanage port -d -t http_port_t -p tcp 6666
+```
+
+For the shared memory tables
+
+```bash
+MemManagerFile /var/cache/mod_cluster
+mkdir /var/cache/mod_cluster
+chcon -v --type=httpd_cache_t /var/cache/mod_cluster
+chcon -v --user=system_u /var/cache/mod_cluster
+```
+
+Note that the permissions should follow the notice you find in error_log:
+```
++++
+[Wed Jun 13 09:35:59 2012] [notice] SELinux policy enabled; httpd running as context unconfined_u:system_r:httpd_t:s0
++++
+```