R5 beta reported bugs

1)  Can't physical map 0xffff0000 to 0xffffffff address.
    From: Corelli Marco <mcorelli@gtwparc.padova.ccr.it>
    Old bug (in r4) - paging.c modified - fix verified - in 10/18 build

2)  PKZIP (2.50) compress of 66610 byte all-null file crashes machine
    From: "Victor Shkamerda" <vvs@auto.bnm.org>
    Old bug (in r4) - verified - appears as PKZIP bug - no fix

3)  Documentation defects in CWSDSTUB usage, etc
    Updated, in 10/18 build

4)  Increase default extra paragraphs
    Updated, add 2K more (8K total), in 10/18 build

5)  Insert smaller VDISK detection code
    Updated, in 10/18 build

6)  Suppress 1.0 extensions
    Updated, in 10/18 build + documentation
    
7)  Actual vs promised block sizes (normal, large memory)
    Paging.c modified - equality check - updated in 10/22 build

8)  Page fault hang in QC test
    Paging.c modified - updated in 10/22 build
    
9)  CWSDPMI consumes all DOS memory
    New bug (in r5) - valloc.c modified - in 10/22 build