move rex bintools into new gem

move all the *scan *parsey code out into
the new rex-bin_tools gem

MS-1691

Author: David Maloney

Gemfile.lock

@@ -32,6 +32,7 @@ PATH
       recog
       redcarpet
       rex-arch
+      rex-bin_tools
       rex-java
       rex-ole
       rex-powershell
@@ -225,6 +226,13 @@ GEM
     redcarpet (3.3.4)
     rex-arch (0.1.1)
       rex-text
+    rex-bin_tools (0.1.0)
+      metasm
+      rex-arch
+      rex-core
+      rex-struct2
+      rex-text
+    rex-core (0.1.1)
     rex-java (0.1.2)
     rex-ole (0.1.2)
       rex-text