Merge pull request #2194 from vlakoff/develop

Fix a code comment in Image_lib
Add webm mime type

http://www.webmproject.org/about/faq/
Merge pull request #2195 from rebornishard/patch-1

Add webm mime type
Fixing issue with comma
Merge pull request #2197 from dontforget/patch-1

Fixing issue with comma
Fix newline standardization.

Signed-off-by: Eric Roberts <eric@cryode.com>
Merge pull request #2198 from cryode/bug/input-newline

Fix newline standardization.
Remove unnecessary defined('ENVIRONMENT') checks

As suggested in issue #2134 & PR #2149
Merge branch 'develop' of github.com:EllisLab/CodeIgniter into develop
Add ENVIRONMENT constant to unit tests
Fix auto_link() for the Nth time

 - anchor() is for local links and breaks ones that don't have a protocol prefix
 - Allow :// links (no actual protocol specified)
 - Further simplified the URL regular expression
Upload library, clean_file_name function: Fix xss bug.

For example: If you clear this string "%%3f3f" according to the $bad array will fail. The result will be "%3f"
Because str_replace() replaces left to right.

Signed-off-by: xeptor <servetozkan@live.com>
Remove str_replace in return
Merge pull request #2201 from xeptor/develop

Upload library, clean_file_name function: Fix xss bug.
Libraries' filenames must be named in a ucfirst-like manner
Merge branch 'develop' of github.com:EllisLab/CodeIgniter into develop
Update unit tests with the ucfirst-library-filename requirement
Fix issue #2179
Some micro-optimization to the Driver library loader