Implemented FS#38
Implemented FS#38

Libraries are now wrapped between -Wl,--start-group and -Wl,--end-group
blocks by default. This resolves link order issues and deals with
circular link dependencies. It can be disabled with
csbuild.Toolchain("gcc").EnableStrictOrdering()

3Jade/csbuild,brandonmbare/csbuild,3Jade/csbuild,brandonmbare/csbuild,3Jade/csbuild,ShadauxCat/csbuild,ShadauxCat/csbuild,3Jade/csbuild,ShadauxCat/csbuild,3Jade/csbuild,ShadauxCat/csbuild,brandonmbare/csbuild,brandonmbare/csbuild