[development] File caching patch for Drupal 4.6 and 4.7

[Kieran Lal]

Hello, we have updated the file caching patches for 4.6 and 4.7.   
This work was funded by http://goodstorm.com and http://ondemand- 
network.com.  It was developed by Jeremy Andrews for CivicSpace.

File caching for Drupal 4.6 http://drupal.org/node/61227
File caching for Drupal 4.7 http://drupal.org/node/45414

We will try to get this in Drupal 4.8 now that it has opened up.   
Please test and respond to the appropriate issues.

Kieran