bzr commit should sanitize input arguments on case-insensitive filesystem

[Alexander Belchenko]

On Windows you can run into weird situation with wrong arguments in commit command:

C:\Temp\1> bzr init
C:\Temp\1> echo > foo
C:\Temp\1> bzr st
unknown:
  foo
C:\Temp\1> bzr add
added:
  foo
C:\Temp\1> bzr ci -m 1 Foo # <<<<<<<< argument has wrong case
Committing to: C:/Temp/1/
added Foo
Committed revision 1.

C:\Temp\1>bzr st
removed:
  Foo
added:
  foo

[Gordon Tyler (doxxx)]

This appears to be fixed in Bazaar 2.0.0.