misc wrapper changes:
- Machine -> Arch
- 'osxcross-conf': add missing OSXCROSS_VERSION
- error out on invald '-stdlib=' value
- add 'osxcross' util which can be used to check
  for an OSXCross installation
- fix 'libLTO.so: cannot open shared object file'
- listFiles(): windows implementation
- cleanup

get_dependencies.sh:
- debian: add --force-yes

add a patch to support some older linux dists
(such as debian squeeze)