add viewer channel and version to the beginning of the About box Licenses information

indra/cmake/BuildPackagesInfo.cmake

@@ -6,5 +6,5 @@ add_custom_command(OUTPUT packages-info.txt
   COMMENT Generating packages-info.txt for the about box
   MAIN_DEPENDENCY ${CMAKE_SOURCE_DIR}/../autobuild.xml
   DEPENDS ${CMAKE_SOURCE_DIR}/../scripts/packages-formatter.py
-  COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_SOURCE_DIR}/../scripts/packages-formatter.py > packages-info.txt
+  COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_SOURCE_DIR}/../scripts/packages-formatter.py "${VIEWER_CHANNEL}" "${VIEWER_SHORT_VERSION}.${VIEWER_VERSION_REVISION}" > packages-info.txt
   )

scripts/packages-formatter.py

@@ -29,6 +29,12 @@
 import errno
 import re
 import subprocess
+import argparse
+
+parser = argparse.ArgumentParser(description='Format dependency version and copyright information for the viewer About box content')
+parser.add_argument('channel', help='viewer channel name')
+parser.add_argument('version', help='viewer version number')
+args = parser.parse_args()
 
 _autobuild=os.getenv('AUTOBUILD', 'autobuild')
 
@@ -50,9 +56,8 @@ def autobuild(*args):
             # Don't attempt to interpret anything but ENOENT
             raise
         # Here it's ENOENT: subprocess can't find the autobuild executable.
-        print >>sys.stderr, "packages-formatter on %s: can't run autobuild:\n%s\n%s" % \
-              (sys.platform, ' '.join(command), err)
-        sys.exit(1)
+        sys.exit("packages-formatter on %s: can't run autobuild:\n%s\n%s" % \
+                 (sys.platform, ' '.join(command), err))
 
     # no exceptions yet, let caller read stdout
     return child.stdout
@@ -84,6 +89,7 @@ def autobuild(*args):
     else:
         sys.exit("Unrecognized --copyrights output: %s" % line)
 
+print "%s %s" % (args.channel, args.version)
 print viewer_copyright
 for pkg in sorted(version):
     print ': '.join([pkg, version[pkg]])