Refactoring substitution error

[stevemessick]

Just had 2 refactorings fail by overspilling text.
E.g. at rename site "myFunc(myVar1, myVar2)", renaming "myVar1" to "myLongVar" leaves "myFunc(myLongVaryVar2)".

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Editor: 12784 (2012-09-24)
OS: Linux - i386 (3.2.0-25-generic-pae)
JVM: 1.6.0_10

SDK installed: true
Dartium installed: true

[scheglov]

Removed this from the M2 milestone.
Added this to the M1 milestone.
Added CannotReproduce label.