tests/test-bdiff.out

Use revlogng and inlined data files by default

This changes revlog specify revlogng by default.  Inlined
data files are also used unless a flags option is found in the .hgrc.
Some example hgrc files:

[revlog]
# use the original revlog format
format=0

[revlog]
# use revlogng.  Because no flags are included, inlined data files
# also be selected
format=1

[revlog]
# use revlogng but do not inline the data files with the index
flags=

[revlog]
# the new default
format=1
flags=inline

*** 'a\nc\n\n\n\n' 'a\nb\n\n\n'
*** 'a\nb\nc\n' 'a\nc\n'
*** '' ''
*** 'a\nb\nc' 'a\nb\nc'
*** 'a\nb\nc\nd\n' 'a\nd\n'
*** 'a\nb\nc\nd\n' 'a\nc\ne\n'
*** 'a\nb\nc\n' 'a\nc\n'
*** 'a\n' 'c\na\nb\n'
*** 'a\n' ''
*** 'a\n' 'b\nc\n'
*** 'a\n' 'c\na\n'
*** '' 'adjfkjdjksdhfksj'
*** '' 'ab'
*** '' 'abc'
*** 'a' 'a'
*** 'ab' 'ab'
*** 'abc' 'abc'
*** 'a\n' 'a\n'
*** 'a\nb' 'a\nb'
done