* gnus-art.el (gnus-use-idna): Don't directly refer to the value of

* gnus-art.el (gnus-use-idna): Don't directly refer to the value of
 idna-program in order to suppress byte compile warning issued by XEmacs that
 came to byte compile the default value section of defcustom forms recently.

* gnus-start.el (gnus-site-init-file): Don't directly refer to the value of
 installation-directory.

* message.el (message-use-idna): Don't directly refer to the value of
 idna-program.

* mm-uu.el (mm-uu-hide-markers): Don't directly call defined-colors.

* smiley.el (smiley-style): Don't directly call face-attribute.