* Reduce repeated directory walking in cleansrc target (substantially
improves speed of building the target on Windows).
* Disable a validity check using an MSVC language extension when using
clang in MSVC ABI mode.
New clones marked as NOT_WORKING
--------------------------------
PC-8001mkIISR [anonymous]
* Generate a new pc8001_flop.xml list, based off Neo Kobe dumps;
* Move several items from pc8801_flop.xml to the new pc8001_flop.xml;
* Generate new lists for pc8001mk2_flop.xml and pc8001mk2sr_flop.xml;
* Hook aforementioned lists where they belongs
( i.e. N-Basic list is now shared between pc8801.cpp and pc8001.cpp,
N80 list belongs to pc8001mk2 and pc8001mk2sr,
N80SR list belongs to pc8001mk2sr alone)
* upd3301.cpp: fix scrolling glitch when unthrottled
* pc8001.cpp: fix machine configs inheritance
* pc8001.cpp: constexpr the XTALs
* pc8001.cpp: allow to enter into N80 BASIC mode for mk2 machines
* Ported pc80s31k to device interface, and hooked it up to pc8001
* Fix validation errors
* Misc documentation updates
* uPD3301.cpp: implement bulk of attribute fields
* upd3301: fix olyboss compile and crashing, add rvv signal
* upd3301.cpp: fix last value of attribute row (7narabe), fix graphic mode when in width 40 (15puzzle)
* upd3301.cpp: consider an attribute end of 0 equal to max size, fixes starfire
* upd3301.cpp: rvv is definitely a global reverse rather than acting on palette for PC8001, document flgworld attribute weirdness (double somersault)
* pc8001_flop.xml: QA selected SW
* pc80s31k.cpp: split into PC80S31 (2d) and PC80S31K (2d/2dd/2hd) devices, rearrange disk bioses
* pc8801.cpp: inherit pc80s31k device and kill off FDC legacy code
* pc80s31k.cpp: documentation updates
* pc8001_flop: move Magic Copy and a alt versions of ay1 and 4d house in here
* pc98.xml: move daivacal from PC88 since it really belongs here
* pc8801_flop.xml: major QA testing on suspicious floppy activities
* pc8801.cpp: remove logging of High [TV]RAM
* pc8801_flop.xml: fix rogue extra comment closing
* pc80s31k.cpp: mailbox the PPI ports, fix barbatus booting;
pc80s31k.cpp: allow filemst to boot, and add note about its unemulated
extended HW;
* upd3301.cpp: convert AT1/AT0/SC to an aggregate variable
* upd3301.cpp: convert attribute fetch to be a client delegate
* pc8001.cpp: move some shared functions to pc8001_base_state
* pc8001.cpp: add DMA functions
* pc8001.cpp: add extension setter for 24KHz mode (which will be used by PC-8801 once implementation is merged)
* pc8801_flop.xml: fix description duplicate
* Bulk replace pc8*_flop.xml capitalized Alt into lowercase
* pc80s31k.cpp: add space.unmap() for terminal_count_r, reorder headers, make constructor trampoline protected
* Standardize Daiva titles across XMLs
* pc8801_cass.xml: revert of software name t[ape] postfixes
* pc8801_flop.xml: more identification of N/V1 BASIC SWs
