Cannot check this against NULL. refs #10081
Added accessor method to get member variable.

Added PoldiInstrumentAdapter::getChopperSpeedPropertyName()
refs #10081
Remove non-ICAT searching logic from Refl GUI.

Refs #10098.
Remove "Search ICAT" from Refl UI .ui files.

Refs #10098.
Modified buildscript for clang

If the jobname (only on mac for now) contains clang then
we will use clang rather than intel for the compiler

refs #10081
Merge remote-tracking branch 'origin/feature/10098_remove_search_box'
Merge remote-tracking branch 'origin/feature/10081_clang_compilation_mac'
Resolve merge conflict between #10112 and #10098.

Refs #10112.

Conflicts:
	Code/Mantid/scripts/Interface/ui/reflectometer/refl_gui.py
	Code/Mantid/scripts/Interface/ui/reflectometer/refl_options.py
	Code/Mantid/scripts/Interface/ui/reflectometer/refl_options_window.py
	Code/Mantid/scripts/Interface/ui/reflectometer/refl_options_window.ui