DOSBox full changelog

Fixed that a very long line inside a bat file would overflow the parsing buffer. (CVE-2019-7165 by Alexandre Bartel)
Added a basic permission system so that a program running inside DOSBox can't access the contents of /proc (e.g. /proc/self/mem) when / or /proc were (to be) mounted. (CVE-2019-12594 by Alexandre Bartel)
Several other fixes for out of bounds access and buffer overflows.
Some fixes to the OpenGL rendering.

Rewrite auto/max cycles algorithm to work better with windows 7, other OSes might benefit as well.
Update 64bit recompiler to work on OSX and Linux.
Several improvements to make the recompilers work with newer compilers and add some workarounds about clang confusing itself.
Fix several variables being the wrong size in the recompiler.

* Several small game specific fixes/hacks/support. (Offensive, Roadhog, GTA installer, Kingdom O' Magic soundcard detection, Pirate booter, Armored Fist installer)
* Add the S3-specific 640x480 256 color mode. (fixes regression in quot;Wooden Ships and Iron Menquot; and quot;I Have No Mouth And I Must Screamquot;)
* Fix a stack overflow that could crash DOSBox.
* Add fake microphone input. (fixes Talking Parrot)
* Modify adlib turn off code, so that it doesn't turn off in cases where the same sound is repeated over and over again.
* Several small fixes to the CDROM audio code.(HOMM2, Redneck Rampage and others)
* Several improvements to the CDROM emulation code. (fixes Alpha Storm and GT Racing 97)
* Some small CPU fixes that might fix something.
* Handle opcode 0xff subcode 7 as invalid instruction. (fixes dif-2 & others)
* Some hercules fixes. (Testdrive)
* Improve support for blanked parts that wrap around to the start of the screen. (fixes Magic Circle d

· Support for more graphics modes and cards.
· Improved Vista support.
· New OPL emulation cores.
· Sound fixes and improvements for Mac OS X.
· Lots of compatibility fixes.
· Lots of cdrom detection improvements.
· Lots of memory (EMS/XMS) improvements.
· Various fixes and enhancements for the recompiling core.
· Support for evdev.
· Lots of DOS fixes.
· Slightly faster!
· More stable.