* camel/camel-stream-mem.c:
* camel/camel-stream-mem.h:
new memory buffer based stream.
* camel/camel-stream-fs.c (_seek):
implementation for file system based stream.
* camel/camel-stream.c (camel_stream_seek):
new method.
* camel/camel-stream-fs.c (camel_stream_fs_class_init):
pass CamelStreamFsClass instead of CamelStreamClass.
svn path=/trunk/; revision=1056
