scmutil: switch match users to supplying contexts
The most appropriate context is not always clearly defined. The obvious cases:
For working directory commands, we use None
For commands (eg annotate) with single revs, we use that revision
The less obvious cases:
For commands (eg status, diff) with a pair of revs, we use the second revision
For commands that take a range (like log), we use None
[ original upstream message ]
syntax: glob
*.pyc
*.pyo
*~
*.swp
*.orig
*.rej
.DS_Store
build/*
MANIFEST