Upgrade preferred Nginx version to 1.2.1

SERVER_SOFTWARE header under Apache should be set with ap_get_server_…

…banner() instead of ap_get_server_description().

Update NEWS

Bump version number to 3.0.10.

Change Nginx download URL to nginx.org.

Don't forget to bump version in Constants.h too.

Update NEWS

Update NEWS and bump version to 3.0.6.

Fix typo.

Add release notes for 3.0.4.