upgrade to Tomcat 7.0.39
update to Tomcat7.0.39 MD5
gitignore eclipse files
add send_sigquit control script
sets URIEncoding to fix broken request url params
Add RemoteIpValve with support for "x-forwarded-for" and "x-forwarded-proto" headers.

Using the default 'internalProxies' list (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, 127.0.0.0/8) is acceptable because all the private addresses are trusted.
Merge pull request #6 from literalice/uri-encoding

sets URIEncoding to fix broken request url params
Merge pull request #7 from cyrille-leclerc/master

Add RemoteIpValve with support for "x-forwarded-for" and "x-forwardedoto" headers.
Add embedded monitoring with simple-jmx-exporter-agent.

* simple-jmx-exporter-agent.jar is added as a javaagent.
* MBeans to collect are defined in `tomcat-metrics.xml`
* for backward compatibility, metrics are outputted in a file (`$log_dir/tomcat7-metrics.data`) which is collected by `stats-appstat` script (with a simple `cat` command)

**Pending**
* verify that the unit of durations metrics returned by `stats-appstat` is mills and not seconds (e.g. `threads.cputime`)
* release simple-jmx-exporter-agent.jar and update its URL in `MakeFile`
merge in cyrille-leclerc-monitoring-agent pull request #8