Added a -V option to a VHD copy operation to cause a verify pass which will confirm all of the expected data has made it to the target virtual disk
Fixed bug in pdp11_xu loopback processing.  Now consistent with pdp11_xq.  Found by Paul Koning
Fixed sim_check_conn to return error status if the socket being checked is writable and no peer name exists (i.e. when a connect has failed). Suggested by Paul Koning
Fixed prior logic in sim_check_conn to return error conditions prior to read/write checks and to validate the peer's address on both read and write connection checks.
Fix to build on HPUX with the HP C compiler which doesn't define __unix
Extended the VAX 8600 memory to 512MB and reworked the memory board slot allocation logic to fill as many slots as possible.
Avoid bug in the HP PA-RISC C compiler. (from Mikulas Patocka)

In 32-bit mode, the compiler truncates constants to 32-bit.
We need LL suffix to avoid the truncation.

This behavior is contrary to the C 99 standard which defines
that constants that do not fit into long and unsigned long shall
have long long type.
Compiler warning cleanup
Added SHOW CPU MEMORY to the MicroVAX I simulator
Fixed disk creation logic to avoid writing a zero sector to the first and last sector of a newly created disk if the disk's contents were copied from another disk.  This solves the last details in issue #35
Force return of SCPE_OPENERR when the same serial port is opened more than once.
Fixed tmxr attach logic to initialize the backlink on all of the mux lines when only a single line is attached.
Added SHOW CPU MEMORY support for all VAX simulators to display the memory controller and board configuration
Merge branch 'master' into VAX-11-BootBlock-Fixup