Full path not used by WP_Filesystem loader
|Reported by:||DD32||Owned by:|
A Full path is not used by the WP_Filesystem class, Which causes the require to fail on systems where the admin includes directory is not searched.
Unsure if this applies to the 2.5 branch, I've only encountered it under trunk today.
Patch also adds a 'filesystem_method_file' filter to go along with the 'filesystem_method' filter to allow for other filesystem methods to be included.