"=" in property

[Michael P. Cavedon]

In my test.properties file I have:

DB_NAME=C:\dbInstall\dbName;upgrade=true

When ant tailors all DB_NAME references in the appropriate files, it
becomes:

DB_NAME=C:\dbInstall\dbName;upgrade

I am losing the "=true".  How do I qualify the equal sign so ant will
know it is part of the DB_NAME property?