fdo#68194 Font files are left after uninstallation

 #i119948# Instruct windows installer to use refcounting on fonts.

Author: Andre Fischer <af@apache.org>
Reported by: DaLi Liu
Patch by: qiuhuaidong
Review by: DaLi Liu and Andre Fischer

Change-Id: I45d4eb509d58852dcf446a0af94ac69fb6347d2d
Reviewed-on: https://gerrit.libreoffice.org/5597Reviewed-by: Fridrich Strba <fridrich@documentfoundation.org>
Tested-by: Fridrich Strba <fridrich@documentfoundation.org>

solenv/bin/modules/installer/windows/component.pm

@@ -210,7 +210,7 @@ sub get_file_component_attributes
 
     if ( $localstyles =~ /\bFONT\b/ )
     {
-        $attributes = 16;   # font files will not be deinstalled
+        $attributes = 8;    # font files will be deinstalled if the ref count is 0
     }
 
     if ( $localstyles =~ /\bASSEMBLY\b/ )