Updated information re: 64-bit Windows and file system redirection

Edited Windows and reference docs with updated information about file system redirection as changed in Puppet 3.7.

3.7/reference/lang_windows_file_paths
3.7/reference/resources_file_windows
windows/index
windows/troubleshooting
edits re: Windows 64-bit MSI changes

Some light edits to the pages affected by the 64-bit MSI.

3.7/reference/lang_windows_file_paths.markdown
3.7/reference/resources_file_windows.markdown
windows/index.markdown
Merge pull request #365 from jbondpdx/puppet37

Puppet37