RFR: 8246431: java/net/httpclient/PathSubscriber tests fail due to missing FilePermission

[Julia Boes]

Hi,

Chris and I reviewed the build configuration that leads to the changing 
location of the library classes. The @library tag, which builds classes 
implicitly in the test class directory, has been supplemented with 
explicit @build tags for the required library classes. This way, these 
classes are always placed in the shared JTWork//classes directory. The 
policy file has been adjusted accordingly to grant minimal permissions.

Updated webrev: http://cr.openjdk.java.net/~jboes/webrevs/8246431/webrev.01/

Cheers,

Julia