* Stageless payloads weren't adding brackets around IPv6 hosts.
* Staged HTTP handler was using an undefined function to check for IPv6
addresses when host header overriding was disabled.
Session expiry, comms timeout, retry total/wait are all now part of all
of the meterpreter payloads as these are going to be used for
maintaining access with resiliency and will aim for consistency across
the payload types.
Methods now require a hash. I went with the hash because 1) that's what
we seem to use everywhere else, and 2) I couldn't get the new keyword
arguments working nicely with the block syntax (I'm clearly stupid).
Somehow this made it into a merge when it shouldn't have. This fix moves
the URI checksum module to where it needs to be and updates all the
references where required. This will result in a class with the dynamic
transport branch, but I can fix that after.
This fixes a huge number of hard-to-detect runtime bugs
that occur when a default utf-8 string from one of these
libraries is passed into a method expecting ascii-8bit
OJ