Reviewed-By: Roberto Raggi <roberto.raggi@nokia.com>

By default now only the first letter is case-sensitive. It is still
possible to choose full or no case-sensitivity as well.

Task-number: QTCREATORBUG-236
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>

 * Rework IBuildParser:
    * Remove name() method.
    * Remove enterDirectory and leaveDirectory signals.
    * Allow chaining of parsers.
 * Rename IBuildParser to IOutputParser.
 * Implement GnuMakeParser.
    * Remove entering/leaving directory related code from all other parsers
    * Move filename fixup heuristic based on entering/leaving directory
      massages from gnumake here from AbstractMakeStep.
 * Add outputParser method to ToolChain: This removes the need to map
   toolchains to BuildParser names in the BuildSteps.
 * Enhance AbstractProcessStep to accept a IOutputParser to parse its output.
 * Remove AbstractMakeStep.
 * Set the appropriate Parsers in all classes deriving from AbstractProcessStep
   and append the ToolChain's parser to the parser chain.
 * Remove BuildParserFactories: There is no more need for them.
 * Remove constants used to identify the BuildParsers.
 * Clean up some names:
    * Replace stdOut with stdOutput.
    * Replace addToTaskWindow with addTask and addToOutputWindow with
      addOutput. Do this wherever it is not yet clear that this will end up
      in the Task/Output window.

Reviewed-by: dt

It activates too easily for some people.

Task-number: QTCREATORBUG-406

Merge IView and BaseView into a single class StatusBarWidget.

This is an attempt to make it work with released gdb 7.0. It uses some
ugly workarounds to compensate for the missing gdb.Block and gdb.Symbol
structures.

 * Remove one layer of layout.

Reviewed-by: dt

Make the diff-base directory a property of VCSBaseEditor and use
everywhere.

Task-number: QTCREATORBUG-74

The search results window assumed the files were searched in sorted
order, which is not always the case especially since "find usages" can
now operate in several threads.

This change makes sure that the list of files in the search results is
always sorted, using a binary search to find the right index to insert
new files.

Reviewed-by: con

It used to be hidden on the Display settings page.

Task-number: QTCREATORBUG-135

arrays

no point in re-parsing them over and over during the scan of a bigger
project ...

shaves off another 20% of the loading time of Qt 4.6.

there is no point in throwing away and re-recreating invariant data over
and over ...

shaves off ~15% of the load time of Qt 4.6.

makes forward delcs in headers possible

findProFileFor(), buildDir() and createProFileReader() make sense only
in relation with an actual pro file anyway, so move them there.

this is probably just as fast (still two allocs per insert), but it is
definitely more elegant.