setup.py: package internals help files
mpm says internal docs should be visible via `hg help` and hgweb. They
need to be in the distribution for this to work. Package them.
--- a/setup.py Sun Dec 13 11:27:52 2015 -0800
+++ b/setup.py Sun Dec 13 11:34:04 2015 -0800
@@ -591,6 +591,7 @@
packagedata = {'mercurial': ['locale/*/LC_MESSAGES/hg.mo',
'help/*.txt',
+ 'help/internals/*.txt',
'default.d/*.rc',
'dummycert.pem']}