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do not create OpenFileDescriptor from invalid VirtualFile

Don't assume %-formatting by default since this makes it impossible to configure custom SQL user parameters (PY-17188, PY-17382, PY-10771)

We've effectivly rolled back the fix for PY-10771 since we'll
reimplement it using default SQL user parameters.

It fixes minor issue, while introducing more distractfull one (horizontal scrollbar should not be visible in most cases)

This reverts commit 1b0a1014.

guava type migration: support of Predicates.alwaysTrue/alwaysFalse/notNull/isNull/equalTo IDEA-148823

default value for unknown version

IDEA-149684 'Declaration access can be weaker' inspection incorrectly suggests to make an inner class private even if it is used in generic parameters of the outer class

Standart normcase() function doesn't change case for non-English letters, so we should do it manually.

this fixes some of "java.lang.IndexOutOfBoundsException: Wrong line: 418. Available lines count: 418" in doUpdateRanges()

SvnIntegrateChangesTask calls getChanges() with null CLMGate,
although it could later fail with NPE in the SvnChangeProvider.
Substitute it with an equivalent fake implementation.