Merged from trunk 5905:5931

Merged from trunk 5905:5931

Update modules doc for the new portage namespace.

For backward compatibility with api consumers, _dep_check_strict
behavior will be explicitly enabled as necessary.  Thanks to Brian
<dol-sen@telus.net> for reporting issues with porthole and equery.

For bug #165783, handle an InvalidDependString exception triggered by an
invalid SRC_URI.

move die into isolated-functions.sh (WarnerBro)

Only echo PORTAGE_LOG_FILE if it's actually set (may not be if sesandbox
is enabled).

For bug #165780, make config-protect code consistently ignore '.*~' and
'.*.bak'.

For bug #165783, handle a potential InvalidDependString exception inside
digestgen().

Enable strict dep checking for repoman.

For bug #165783, handle a potential InvalidDependString exception inside
doebuild().

For bug #165783, handle a potential InvalidDependString exception in
repoman and report a SRC_URI.syntax failure.

Synchronize required hash code in all relevant places.

Turn on strict dep checking to fix the isvalidatom test.

Make the "lfull" output more succinct by omitting categories for which
there are no violations.

die requires diefunc and dump_trace too; duh; also move extdebug into
isolated-functions.sh (WarnerBro)

Create namespace for emerge (genone)

svn path=/main/branches/prefix/; revision=5933