Merge pull request #145 from chisholm/master

Updated documentation of the shadow test.
removing some smart quotes and long hypens.
Merge branch 'master' of https://github.com/OVALProject/Language
reverting changes to the unix-def:shadow_test pending further community discussion. #49.
reverting changes to the unix-def:password_test pending further community discussion. #49.
closes #103.
removing the enumeration restriction for the sol-def:smf_test protocol entity. closes #106.
merging in Mike's documentaion update for managed_entity_type behavior. Closes #112.
schema update for #86

Schema updates to cover clarification of WORD, DWORD, and QWORD values
schema update for #110

Adds an OperatorEnumeration attribute to the possible_restriction
element in external variables. Updates the documentation specifying
default behavior.
schema update for #85

Added the CIM_DATETIME WMI date format to the
oval-def:DateTimeFormatEnumeration.
schematron update for #90

Fixes the schematron rule to throw a warning rather than an error for
issue 90.
Schema update for #92

Only required definition schema update since user_sid55 Objects create a
user_sid_item which already have the last_logon entity.
Merge remote-tracking branch 'upstream/master' into iss110
Merge pull request #147 from drothenberg/iss92

Fixes #92
schema and specification updates for regex issues

Contains fixes for issues #42, #43. #45. and #60
Merge pull request #148 from drothenberg/iss90

Fixes #90
Merge pull request #150 from drothenberg/iss85

Fixes #85
Merge pull request #146 from drothenberg/iss110

Fixes #110
Merge pull request #151 from drothenberg/regex_issues

fixes #42, #43. #45. and #60