Support for conditional compilation comments

[Frederico Caldeira Knabben]

Conditional compilation comments must not be removed from the script while compressing. For example, the following code is completely removed today:

/*@cc_on
   @if (@_win32)
      document.write("OS is 32-bit. Browser is IE.");
   @else
      document.write("OS is NOT 32-bit. Browser is IE.");
   @end
@*/

​This page has more information about the Conditional Compilation syntax.

[Frederico Caldeira Knabben]

The proposed fix simply leaves conditional comments untouched.

[Frederico Caldeira Knabben]

Fixed with [2237].