add quirks flag to handle bad thunderbird mbox formats

src/sampleconf/recoll.conf.in

@@ -17,7 +17,8 @@ topdirs = ~
 # ".*" in there (as was the case with an older sample config)
 # These are simple names, not paths (must contain no / )
 skippedNames = #* bin CVS  Cache cache* caughtspam  tmp .thumbnails .svn \
-	     *~ recollrc .beagle .git .hg .bzr loop.ps
+     *~ .beagle .git .hg .bzr loop.ps .xsession-errors \
+     .recoll* xapiandb recollrc recoll.conf
 
 # Wildcard expressions for paths we shouldn't go into. The database and
 # configuration directories will be added in there, else the default value
@@ -170,3 +171,7 @@ webcachemaxmbs = 40
 # used for application selection inside mimeview
 #[/some/app/directory]
 #localfields = rclaptg = someapp; otherfield = somevalue
+
+# Enable thunderbird mbox format quirks where appropriate
+[~/.thunderbird]
+mhmboxquirks = tbird