Fixed improper included header in vcl_memory_tr1.h

TR1 is a special case in vcl and does not exactly fit the original
vcl header generation framework.  A small change was made to add
a special case for TR1 in which the "_tr1" suffix is stripped when
generating the include path.
Merge branch 'fix-vcl-memory-tr1'

* fix-vcl-memory-tr1:
  Fixed improper included header in vcl_memory_tr1.h