Merged from trunk 6539:6550

   Merged from trunk 6539:6550

   +------------------------------------------------------------------------+
   | 6540    | Don't protect USE_EXPAND variables from -* anymore because   |
   | zmedico | the really critical ones should all be in use.force now      |
   |         | (typically kernel_linux, elibc_glibc, and userland_GNU).     |
   |---------+--------------------------------------------------------------|
   | 6541    | For bug #162404, use a pseudo-terminal device pair (instead  |
   | zmedico | of a normal pipe) for moving ouput out of the sesandbox      |
   |         | domain.                                                      |
   |---------+--------------------------------------------------------------|
   | 6542    | wrap lines                                                   |
   | zmedico |                                                              |
   |---------+--------------------------------------------------------------|
   | 6543    | Check to see if I have svn.g.o fixed, no actual file         |
   | robbat2 | changes.                                                     |
   |---------+--------------------------------------------------------------|
   | 6544    | Check to see if I have svn.g.o fixed, no actual file         |
   | robbat2 | changes, pass #2                                             |
   |---------+--------------------------------------------------------------|
   | 6545    | Add registration support for preserved library objects, move |
   | genone  | the library->consumer map code out of vardbapi and fix a bug |
   |         | in the setup code for preserve-libs and collision-protect    |
   |         | caused by using relative paths with os.path.islink()         |
   |---------+--------------------------------------------------------------|
   | 6546    | - store newsid in unread file, not the path to the news item |
   | genone  | - use octal numbers to specify file permissions - use        |
   |         | descriptive exceptions when (not) creating NewsItem objects  |
   |         | - code style cleanups                                        |
   |---------+--------------------------------------------------------------|
   | 6547    | Display notification about unread news in all situations     |
   | genone  | specified by glep 42                                         |
   |---------+--------------------------------------------------------------|
   | 6548    | Enable elog functionality for the python side of portage     |
   | genone  |                                                              |
   |---------+--------------------------------------------------------------|
   | 6549    | Update for glep42, preserve-libs and elog                    |
   | genone  |                                                              |
   |---------+--------------------------------------------------------------|
   | 6550    | Catch a potential OSError if the child process has already   |
   | zmedico | died.                                                        |
   +------------------------------------------------------------------------+

svn path=/main/branches/prefix/; revision=6593