Rename testvm -> testdisplay
Beginning of virtual machine/memory tests
"HEADLESS" CPP define and envvar switches

    * Allows running emulator in headless mode (default for some tests)
    * setting HEADLESS=1 envvar from commandline will force headless operation
beginning of softswitch tests
Refactor tests to use common code
test_PAGE2_off and improved test_PAGE2_on
Move more common code into testcommon.c
TEXT and MIXED switch tests
Allow "complete" reboots to occur when debug-stepping

    * This allows reboot to work if RAMRD switch is set to auxmem (as it is in a few VM tests)
don't leak
A 6502 assembly script to test AUXMOVE and RAMRD boundary execution
Attempt to load non-gzipped test disks (aborted from previous runs)
define should be larger and private
6502 assembly test helper defines
test HIRES switch
refactor to use better flag names, better softswitch result test, ...
first language card test
test language card C081 switch
test C082, C083 switches
test C088, C089, C08A, C08B switches