Fixed #15327 -- Modified the Oracle test database signature method to allow for the case where TEST_USER is unspecified. Thanks to depaolim for the report.
Fixed #15327 -- Modified the Oracle test database signature method to allow for the case where TEST_USER is unspecified. Thanks to depaolim for the report.

git-svn-id: 554f83ef17aa7291f84efa897c1acfc5d0035373@15568 bcc190cf-cafb-0310-a4f2-bffc1f526a37

svn2github/django,svn2github/django,svn2github/django