Adds BSD sysdep.
Adds support for MAKE variable, overriding make command in our build
scripts.
Fixes more files not ending with newline.
This was SVN commit r10994.
Fixes test generation path in XCode and MSVC.
Fixes PCH dependency tracking in GCC. Fixes#903.
Fixes PCH being included in its own input (caused GCC bus error).
Ensures premake4 gets rebuilt on *nix after running clean-workspaces.sh.
Updates Windows premake4 binary.
This was SVN commit r10154.