Merge pull request #53 from ccoffin/master

Fixes group_test description for subgroups.
adding minor documentation fix to pattern match description to make it clear it uses Perl 5 Compatible Regular Expressions.
fixed a few typos reported over the oval-developer-list.
changed section 4.3.34 to say 'collection' of values instead of 'set'.
fixed a typo in linux-def:rpmverify_object and linux-def:rpmverifypackage_object documentation.
fixed a typo in the title of reference [17] and updated the link (Appendix E).
Renamed the rule 'unix-def_selinuxsecuritycontext_objectfilepath2' to the more accurate 'linux-def_selinuxsecuritycontext_objectfilepath2' since the rule is in the linux-definitions-schema.xsd. Issue #40.
Merge remote-tracking branch 'upstream/master'
Created new section 'Version 5.11 Revision 2 - TBD' in 'Appendix B -Change Log'. Created entry for additional sentence in win-def:group_test.