phobos commit, revision 1650


user: rsinfu

msg:
Restored an assertion commented out in r1643.  It was my local problem (related to bug 3779 and 4298) and linker error does not occur for other people.
The other assertion commented out in the same changeset is not restored because its validity depends on bug 4237.

http://www.dsource.org/projects/phobos/changeset/1650