Add a new blocker.

Remove item completed by pmichaud++

TODO

@@ -10,12 +10,8 @@ Tasks/Bugs:
 * partcl's TclString.'get_bool'() needs to be ported over (blocking t/cmd_for.t)
 * support a bare minimum unknown - invoking a non-existant command should
   result in a tcl error, not a parrot error. (t/tcl_misc.t)
-* whitespace significant in expressions (blocking t/cmd_if.t)
-
-> if {1==1} "puts hi"
-hi
-> if { 1 == 1 } "puts hi"
-Null PMC access in get_bool()   ** fixed in 343feaf **
+* list elements can be quoted words. (See puts [join {"a" b}]) - blocking
+  t/tcl_backslash.t
 
 * support associative arrays
 * error on references to non-existant variables