COMP: Do not warn about unused typedefs.

GCC 4.8 adds a warning about local unused typedefs, but making sure these types
are available is an important part of the ITK ConceptChecking framework.
Disable the check with a compiler flag.

Change-Id: I59040e9d445822d0ba9a0b846fe7f11e58bc76d3
DOC: Cleanup docs for ThreadedDomainPartitioner and subclasses

Also some style fixes, making parameter names consistent.

Change-Id: I3bfda18eb261bb08ced18bf0108bda074795ca87
COMP: Fix argument 'buffer' might be clobbered on GCC 4.8.

Fix warnings:

  /home/matt/src/ITK/Modules/IO/JPEG/src/itkJPEGImageIO.cxx:465:6: warning:
  argument ‘buffer’ might be clobbered by ‘longjmp’ or ‘vfork’ [-Wclobbered]

By wrapping the setjmp call in its own function with limited local variables
according to:

  http://stackoverflow.com/questions/2024933/warning-might-be-clobbered-on-c-object-with-setjmp

Change-Id: I4adb989826f253aec921b3d4a221d565db8dadbe
DOC: SingelThreaded -> SingleThreaded in Doxygen Group.

Change-Id: Ideccede3bc90f5a5609a22281aab95eefe6aabbf
Suggested-by: Julien Finet <julien.finet@kitware.com>
Merge topic 'SingelDoc'

03b1e81 DOC: SingelThreaded -> SingleThreaded in Doxygen Group.
Merge topic 'GCC4.8'

72f08b4 COMP: Fix argument 'buffer' might be clobbered on GCC 4.8.
737320d COMP: Do not warn about unused typedefs.
Merge topic 'Doc-ThreadedDomainPartitioner'

e0ac1bb DOC: Cleanup docs for ThreadedDomainPartitioner and subclasses