Update python_gtk to debian stretch

When I upgraded Python earlier, I missed the python_gtk repo.

Change-Id: Ie10be829730513d630306d779dc329f4417cdd7f
diff --git a/debian/python_gtk.BUILD b/debian/python_gtk.BUILD
index 367c137..d65101a 100644
--- a/debian/python_gtk.BUILD
+++ b/debian/python_gtk.BUILD
@@ -68,7 +68,7 @@
 _src_copied = ["/".join(f.split("/")[4:]) for f in _src_files]
 
 _builtin_so_files = glob([
-    "usr/lib/python3/dist-packages/**/*.cpython-34m-x86_64-linux-gnu.so",
+    "usr/lib/python3/dist-packages/**/*.cpython-35m-x86_64-linux-gnu.so",
 ])
 
 _system_so_files = glob(
@@ -77,7 +77,9 @@
         "usr/lib/**/*.so*",
     ],
     exclude = [
-        "usr/lib/**/*.cpython-34m-x86_64-linux-gnu.so",
+        "usr/lib/**/*.cpython-35m-x86_64-linux-gnu.so",
+        "usr/lib/gcc/x86_64-linux-gnu/6/libgcc_s.so.1",
+        "usr/lib/gcc/x86_64-linux-gnu/6/libgcc_s.so",
     ],
 )
 
@@ -132,8 +134,8 @@
 
 genrule(
     name = "copy_libgeos_c",
-    srcs = ["rpathed/usr/lib/libgeos_c.so.1"],
-    outs = ["rpathed/usr/lib/libgeos_c.so"],
+    srcs = ["rpathed/usr/lib/x86_64-linux-gnu/libgeos_c.so.1"],
+    outs = ["rpathed/usr/lib/x86_64-linux-gnu/libgeos_c.so"],
     cmd = "cp $< $@",
 )
 
@@ -155,7 +157,7 @@
         "shapely/geos.py",
     ],
     data = _data_files + _builtin_so_copied + _system_so_copied + [
-        "rpathed/usr/lib/libgeos_c.so",
+        "rpathed/usr/lib/x86_64-linux-gnu/libgeos_c.so",
     ],
     imports = ["usr/lib/python3/dist-packages"],
     restricted_to = ["@//tools:k8"],