7130404: [macosx] "os.arch" value should be "x86_64" for compatibility with Apple JDK6
Summary: On Mac OS X, align system property "os.arch" with Apple legacy JDKs. Also, improve os.name string matching by using .contains() method instead of .startsWith(). This fix spans multiple repositories.
Reviewed-by: dcubed, phh, ohair, katleman
^build/
^dist/
/nbproject/private/
^src/share/tools/hsdis/build/
^src/share/tools/IdealGraphVisualizer/[a-zA-Z0-9]*/build/
^src/share/tools/IdealGraphVisualizer/build/
^src/share/tools/IdealGraphVisualizer/dist/
^.hgtip
.DS_Store