Fixed bug with renaming files on MSWindows platforms: file read in FileGraph  had not closed input file; this stopped renamed/delete from working. Also  simplied updateFrom.
Fixed bug with renaming files on MSWindows platforms: file read in FileGraph 
had not closed input file; this stopped renamed/delete from working. Also 
simplied updateFrom.


git-svn-id: 227c23bb629cf7bef445105b977924772e49ae4f@1109939 13f79535-47bb-0310-9956-ffa450edef68

danc86/jena-core,danc86/jena-core