Patch setup.py on old trusty

Author: yarikoptic

debian/patches/deb_old_python2

@@ -0,0 +1,11 @@
+--- a/setup.py
++++ b/setup.py
+@@ -19,7 +19,7 @@ def main():
+     # Get version and release info, which is all stored in heudiconv/info.py
+     info_file = op.join(thispath, 'heudiconv', 'info.py')
+     with open(info_file) as infofile:
+-        exec(infofile.read(), globals(), ldict)
++        exec infofile.read() in globals(), ldict
+ 
+ 
+     def findsome(subdir, extensions):

debian/patches/trusty-dsc-patch

@@ -0,0 +1,6 @@
+diff --git a/debian/patches/series b/debian/patches/series
+index e69de29..1bc74a4 100644
+--- a/debian/patches/series
++++ b/debian/patches/series
+@@ -0,0 +1 @@
++deb_old_python2