Get distcheck working on FC7.

Need to ignore some files:
 ./share/icons/hicolor/icon-theme.cache and ./share/info/dir
these get created by the install system but don't get deleted
(and cannot be deleted because they could be shared).
So just ignore them.

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@16844 57a11ea4-9604-0410-9ed3-97b8803252fd

Makefile.am

@@ -144,6 +144,8 @@ doc:
 
 distcleancheck_listfiles = \
   find -type f -exec sh -c 'test -f ${srcdir}/{} || echo {}' ';'
+distuninstallcheck_listfiles = \
+  find . -type f -print | grep -v ./share/icons/hicolor/icon-theme.cache | grep -v ./share/info/dir
 
 dist-hook: po/POTFILES.in