[Core] Use correct configuration selector.

Currently, when building a specific project within a solution using the command line, the ItemConfigurationSelector is used, resulting in referenced projects using the projects configuration rather than the configuration specified by the solution.

This changes the behavior of the command line to match the behavior within the IDE.
[CSharpBinding] Corrected indent engine reset.
Fixed 'Bug 14729 - False positives in "expression has some identical items"'
Fixed 'Bug 14719 - Removing unused parameters from delegates'
Fixed 'Bug 4529 - Foreach -> For refactoring is not available for nested foreach'
Bump monomac/maccore for compilation fixes with mono 3.2.3+
Bump md-addins
[Git] Code cleanup. Readonly modifier, redundant namespace usage.
Fixed 'Bug 14759 - Lambda expression can be simplified to method group issue'
[build] Partially revert 90904fa9dd96b65944ae402a12ccb81e681b5d44.

Alan, you forgot to push that commit.
[CorDebug] Surrounded getting display string with try/catch so we don't corrupt output.
Revert "[build] Partially revert 90904fa9dd96b65944ae402a12ccb81e681b5d44."

This reverts commit 93a35d1964dd5a3d4b8c1d301ce07868c5c69fe6.
Revert "Bump monomac/maccore for compilation fixes with mono 3.2.3+"

This reverts commit 90904fa9dd96b65944ae402a12ccb81e681b5d44.
This wasn't supposed to be pushed.
Bump nrefactory.
[CSharpBinding] Added NRefactory code generation service.
[PCL] The new Profile Selector Dialog.

The UI is mostly the same, but I completely rewrote the business
logic behind it.

UI improvements:
* added a combo box at the top where you can select a profile
* added improved warning / error label at the bottom

Business logic:
* new logic to compute applicable profiles
* whenever the selected frameworks exactly match a profile, select
  it in the combo box at the top - otherwise, display info / warning
  message at the bottom to give the user a hint what to do
  (ie. can implicitly select, need to select more / less frameworks).
* we can now implicitly select missing frameworks
* when more than one profile matches, try to find a best match
[Win32] Added flags to 2 enums and moved location of Author attribute.
Bump nrefactory.
Bump monomac and maccore for mono 3.2.3+ compilation fixes
Bump gui-unit to bring the submodules in sync