The compface.patch file has a patch that teaches the compface
and uncompface programs how to read .xbm format (X bitmap) files,
instead of the arcane .ikon files it used before.

This patch should apply OK to the files in the compface directory of
the picons (a.k.a. facesaver) software.

With the new version of uncompface, the exmh X-Face pipeline can just be:
uncompface -X

To create the X-Face header from a 48x48 .xbm file, just do
compface your.xbm > out

The file "out" will contain three lines of jibberish. You need to add
the X-Face: header

e.g. out contains:
 znu_@QbSegynS/\2YND%-w_L.V$bG-M.}<:^^3tS,BszwEdNEo)-/"eZF^+1]M%>A#"QV8U
 #*cFsKsnwC63B`<ee|ik?J'%flkca.~y"QRpTa~0*U~-A2$*bF<OCR3NNl9f8Th79*RvU$D?EsWPU0
 _"Tj_BHv""uV

In your components file, put
X-Face: znu_@QbSegynS/\2YND%-w_L.V$bG-M.}<:^^3tS,BszwEdNEo)-/"eZF^+1]M%>A#"QV8U
 #*cFsKsnwC63B`<ee|ik?J'%flkca.~y"QRpTa~0*U~-A2$*bF<OCR3NNl9f8Th79*RvU$D?EsWPU0
 _"Tj_BHv""uV

Finally, remember that if you put this in your MH replcomps file, double-up
the % and \ characters, which are special in that context.  It looks like:

X-Face: znu_@QbSegynS/\\2YND%%-w_L.V$bG-M.}<:^^3tS,BszwEdNEo)-/"eZF^+1]M%%>A#"QV8U
 #*cFsKsnwC63B`<ee|ik?J'%%flkca.~y"QRpTa~0*U~-A2$*bF<OCR3NNl9f8Th79*RvU$D?EsWPU0
 _"Tj_BHv""uV