added changes for 0.58

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@767

ChangeLog

@@ -1,3 +1,24 @@
+0.58
+  - fixed date and time issues with fcbs
+  - added more commands to the internal Shell
+  - corrected config system when a old configfile was used
+  - fixed cga put and get pixel
+  - fixed some vga register getting reset to wrong values
+  - improved support for foreign keyboards
+  - improved joystick support
+  - made dosbox multithreaded again
+  - lot's of soundblaster fixes
+  - dma fixes
+  - cdrom support
+  - midi support
+  - added scale2x
+  - reenabled screenshot support
+  - joystick support fixes
+  - mouse improvements
+  - support for writing wavefiles
+  - added directory cache and longfilename support (longfilenames will be mangled)
+  - mouse fixes
+  
 0.57
   - added support for command /C
   - fixed all fcb-write functions