Changes to httpd.conf required before upgrading to Bugzilla 4.3.3 (and 4.4)

I saw several admins being confused about why their Bugzilla installation stopped working after upgrading to Bugzilla 4.3.3. First of all, remember that 4.1, 4.3, 4.5, etc.. are developement releases, not stable releases! Stable releases are of the form 4.0, 4.2, 4.4, etc… Now, the reason for this specific issue is because we added  "Options -Indexes" to bugzilla/.htaccess to prevent directory browsing, but this requires that your httpd.conf configuration file allows the usage of Options in .htaccess. Till now, you probably had:

Bugzilla 4.2 and older:

<Directory /var/www/html/bugzilla>
    AddHandler cgi-script .cgi
    Options +Indexes +ExecCGI
    DirectoryIndex index.cgi
    AllowOverride Limit FileInfo Indexes
</Directory>

Now, you must have:

Bugzilla 4.4 and newer:

<Directory /var/www/html/bugzilla>
    AddHandler cgi-script .cgi
    Options +ExecCGI
    DirectoryIndex index.cgi index.html
    AllowOverride Limit FileInfo Indexes Options
</Directory>

Note that +Indexes has been removed from the Options line, that index.html has been added to DirectoryIndex (for the doc) and more importantly that we added Options to AllowOverride. This last change is the one required to make Bugzilla work again.

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