Add Mac OS X Bundler target

• Add Mac OS X Bundler target.
• Improve publish configuration.

Improve and reduce size of sfx.exe

• Append arguments passed to sfx.exe to bundled executable.
• Use sfx.exe modification time instead of archive ones.
• Use ldflags to reduce sfx.exe size.

Append Microsoft Windows File Properties/Version Info to sfx.exe and sfxv.exe

• Append Microsoft Windows File Properties/Version Info to sfx.exe and sfxv.exe using goversioninfo.
• This allows File Properties/Version Info modification via tools like rcedit.

Initial release

Initial release of sfx :

• SFX and SFX verbose bootstrappers
• Basic bundler for windows and linux