Fix R install instructions
Generate stable output when running tests: patch localtime
Add stub file barchart.py to ensure stable output for filters-test.txt
Change utf8-bom-test.txt to generate stable output
Do not print the source-highlight version, it may differ between environments
Do not print the asciidoc version in tests
Merge pull request #31 from florentx/stable-output

Generate stable test output
Stricter tests: exit code 1 on warnings too
Fix latex-filter on Python 2.6
Print all warnings for the tests
Declare the empty section [unfloat-blockmacro] on the docbook45 backend
New 'messages' directive to acknowledge and discard a specific message in the tests
Use the '% messages' directive to discard current warnings
Replace deprecated md5 module with hashlib.md5