Test various encodings in worksheet names (failing)
Fix encoding problems when non-ascii names used for worksheets
TestProperties#test_pack_VT_FILETIME : Bug fix.

  use Time.gm not to fail due to different timezone.
TestProperties#test_create_summary_property_set : Bug fix.

  use Time.gm not to fail due to defferent timezone.
TC_example_match#test_properties : Buf fix.

  set @localtime JST localtime not to fail due to different timezone.
TC_example_match#test_properties : set ENV["TZ"] to pass on ruby 1.8.7
Merge branch 'fix-non-ascii-worksheet-names' of git://github.com/maximerety/writeexcel into maximerety-fix-non-ascii-worksheet-names
Merge pull request #28 from maximerety/fix-non-ascii-worksheet-names

Fix non ascii worksheet names
Merge branch 'master' of github.com:cxn03651/writeexcel
Worksheet#check_sheetname_valid_chars : setting str more simple.
Worksheet#check_sheetname_valid_chars : extract conditional.
add v1.0.2 comment.
set version to v1.0.2.