Bug fixes

I screwed up 1.4 by not including all_patches.patch.

• Feature: #72897 - Block caching =) Not like the blockcache module... no configuration... just apply patch and go. Shaves 1.5 ms off of each page load on my MacBook, anonymous as well as authenticated.
• Feature: new strategy for node cache clearing to accommodate the role-based caching. Needs some eyeballs (that means you, slantview ;-) Also fixes a call to undefined function in the case that forum module is not enabled.
• Bugfix: fixed order of operations in hook_comment.

Hopefully I can get this working for all of you...

Update to the 6.x upgrade review and a couple of bug fixes.

Stable 5.x branch -- fixes a bug and adds caching support.

This release clears up two bugs:

• MIME Type Support Extremely Limited
• get_headers() error

Now, PHP4 installations gracefully degrade, requiring the user to enter the remote file size manually, with a warning to that effect on the administrative page, as well as an appropriate description on the RSS Remote Enclosures fieldset.