Tell scons to build the new TestHelpers package so that ISIS buildservers are still happy with moving the test helpers while the CMake transition is still in progress. Refs #2196 and #1881

Reorganised using namespace declarations that were polluting the test helper headers. All are now in the cpp files. Ported over the SANSInstrumentCreationHelper and added it to the ComponentCreationHelper file. All the helper classes are ported but Scons knows nothing so the originals are left in their place. Re #2196

Added a TestHelpers package to hold code that is used for creating helper functions/classes for unit tests. Required for implementation of unit tests with CMake. Not quite active yet though. Re #2196. 

Missed necessary changes to the nightly build script for the RPM when testing locally. Should fix automated RPM build now. Re #1881

Commenting out tests that are using the convenience functions for creating data. The implementation needs to be moved out of the header. Refs #1881.

Attempt to get GMock/GTest into CMake for real. Headers and libgmock generate a huge number of linker errors that look to be self-inflicted, so test compilation fails. No working solution found. This refs #1881.

Modified call for cxxtestgen so it is more likely to work on windoze. Only the build server knows. Refs #1881.

Split off Windows setup into separate file. Revert bit-ness check to test CMAKE_CL_64 (can't rely on "64" being in the generator string - it isn't for NMake). Still works for me if choosing 32 bit Visual Studio generator. Remove explicit path from FindPoco - CMAKE_LIBRARY_PATH is searched anyway. Re #1811.

refs #1624 Visit presenters build under cmake. Tests run from sh script. All pass. Test script not great, but soon to be ditched.

Adding GMock/GTest finders and including into CommonSetup. The finders are currently a no-op. This refs #1881.