Courier-imap and maildrop recompilation

I need to enable quota for trash folders. Here i found that i need use

Code:

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--with-trashquota

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to compile maildrop and courier-imap.

I did some research and found This.

Downloaded sources and executed:

Code:

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DEB_BUILD_OPTIONS="--with-trashquota" fakeroot debian/rules binary

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for both packages. After all finished i have installed produced packages and restarted system.

I cant see change, trash folder still has unlimited space - what i did wrong?