tomcat: Bump to 7.0.54

Signed-off-by: Asias He <asias@cloudius-systems.com>
tomcat: Cleanup

Do not re-download source tarball if it exsits.

Signed-off-by: Asias He <asias@cloudius-systems.com>
tomcat: Add two patches

* Use bio connector explicitly
Linux will use APR connector if it presets. For apple to apple comparsion,
specify connector to use explicitly. Copy ROOTFS/usr/tomcat to linux, you get
the same configuration.

For your reference, 3 http connectors supported:

   org.apache.coyote.http11.Http11Protocol - blocking Java connector
   org.apache.coyote.http11.Http11NioProtocol - non blocking Java connector
   org.apache.coyote.http11.Http11AprProtocol - the APR/native connector

* Do not enable AJP connector
AJP is not used. Disable it by default.

Signed-off-by: Asias He <asias@cloudius-systems.com>
tomcat: cleanup

Signed-off-by: Asias He <asias@cloudius-systems.com>