Installer build improvements

[jng]

• Upgrade to use WiX 3.5
• Upon adoption of RFC 121. Update the binary PHP/Apache/Tomcat files to match the versions specified in the aforementioned RFC
• Include Developer's Guide and the developer samples
• Install Tomcat as a service (#953)

[jng]

IIS configuration component of the installer needs an overhaul due to the removal of the PHP ISAPI module in 5.3.8

Proposed solution:

If IIS configuration is selected, do the following before installation:

IIS 6.0/5.1

• Check for the existence of fcgiext.dll (This is the FastCGI extension dll)
• If this dll does not exist, direct the user to: ​http://www.iis.net/extensions/fastcgi

IIS 7.0+

• Check if FastCGI is enabled (how?)

For the actual installation, we need to modify the following:

IIS 6.0/5.1

• Change handler mapping from php_isapi.dll to fcgiext.dll

IIS 7.0+

• Use appcmd.exe to create the FastCGI application process pool and the PHP handler mapping

Another thing of note: FastCGI in IIS recommends using a non thread-safe version of PHP, whereas a thread-safe version of PHP is recommended for Apache. Should we bundle both?

More information:

• ​http://learn.iis.net/page.aspx/247/using-fastcgi-to-host-php-applications-on-iis-60/
• ​http://learn.iis.net/page.aspx/246/using-fastcgi-to-host-php-applications-on-iis/

[jng]

If IIS configuration is chosen, it would also be of help to users to slap on a big warning message stating that FastCGI for IIS needs to be installed before proceeding.