Added a testing project to get headers working. Added sparsehash source.
Clang's template type deduction needed assisitance in make_pair.
Changed <unordered> include from tr1 to std.
Removed inline from function because linker was missing it.
static_cast to remove warnings.
Xcode project settings.
Added config.h to source. This was borrowed from elsewhere.
subset of sparsehash files in VC. .gitignored the rest.
Xcode files.
include/sparsehash added.
Merge branch 'dpj-dev' of github.com:deltadev/sga into dpj-dev

Conflicts:
	sga.xcworkspace/contents.xcworkspacedata
	sga.xcworkspace/xcshareddata/sga.xccheckout
	sga/sga.xcodeproj/project.pbxproj
Fixed sparse hash headers.
Added option to preprocess to keep rejected samples.
Xcode settings.
Merge branch 'dpj-dev' of github.com:deltadev/sga