Make hxd.res.DynamicText ignore ::patte(rns):: that are not alphanumeric (#1079)
Make hxd.res.DynamicText ignore ::patte(rns):: that are not alphanumeric (#1079)

* Make hxd.res.DynamicText use the r_attr regex

You can now edit the r_attr regex from an init macro and from the start
of the program to make it ignore non-valid ::patte(rns)::
for example with ~/::([A-Za-z0-9_]+)::/g
HeapsIO/heaps,R32/heaps