Auto Update: 6.4.7 -> 6.4.8

Auto Update: 6.4.6 -> 6.4.7

fix missing checksum

checknupdate: make it more reliable

cdn seems to update slower these days and checksum is likely to fail due
to no file when feed update observed

Auto Update: 6.4.5 -> 6.4.6

fix missing checksums

Auto Update: 6.4.4 -> 6.4.5

remove failed clr patches, sync with clr

fix missing checksums

Auto Update: 6.4.3 -> 6.4.4

Auto Update: 6.4.2 -> 6.4.3

Auto Update: 6.4.1 -> 6.4.2

Auto Update: 6.4.0 -> 6.4.1

6.4

Auto Update: 6.3.8 -> 6.3.9

Auto Update: 6.3.7 -> 6.3.8

Auto Update: 6.3.6 -> 6.3.7

Auto Update: 6.3.5 -> 6.3.6

Auto Update: 6.3.4 -> 6.3.5

Auto Update: 6.3.3 -> 6.3.4