dest in s3 module does not work with ~username expansion for home directories

Merge branch 'digital_ocean_idempotence_take2' of https://github.com/ralphbean/ansible into ralphbean-digital_ocean_idempotence_take2

The code to determine the number of running instances could blow up
if the response from AWS did not actually contain any data. This code
makes it a bit smarter in handling, so that it will wait for a valid
response regardless of the wait condition.

Fixes #3980

Merge branch 'empty_inventory' of https://github.com/spil-jasper/ansible into spil-jasper-empty_inventory

Merge branch 'ec2_inventory_route53' of https://github.com/herbyg-axial/ansible into herbyg-axial-ec2_inventory_route53

Merge branch 'obsd-fix-release' of https://github.com/johanwiren/ansible into johanwiren-obsd-fix-release

Merge branch 'add-scheme-to-htpasswd-params' of https://github.com/PugglePay/ansible into PugglePay-add-scheme-to-htpasswd-params

Merge branch 'open_iscsi_bis' of https://github.com/sergevanginderachter/ansible into sergevanginderachter-open_iscsi_bis

Instantiating the Inventory class with host_list=None now results in an
empty inventory instead of an error.

Elaborate on capabilities of subversion module

supervisorctl module: fixing typo in error handling

host: minor doc style improvements

Fix for commented dmidecode output

host: added another example

This patch fixes the problem that on some system dmidecode prints out warning information as commented text. For example:

    [user@system ~]# dmidecode -s system-manufacturer
    # SMBIOS implementations newer than version 2.6 are not
    # fully supported by this version of dmidecode.
    HP

So we remove all commented lines from the output.

* make filtering more comprehensive
* add checks against missing route53 zone exclusion option