Fix introspection of C array data members

[wmtan]

This pull request is fixes for three different problems involving C array data members, plus a unit test that would have found one of the problems. These problems all caused failures in conditions code in many relval tests in the ROOT6 branch.

1)MemberWithDict::typeof(), when the member is a C array, stripped off the array information and just returned the underlying type. The array information should not have been stripped.

2. A framework unit test is added here that would have found the above problem.

3. TypeID::className() put a space between the base type name and the opening square bracket. This is incompatible with the naming used by conditions.

4. In the ROOT6 specific code in CondCore/ORA, the C array information was not stripped off in several places where it should have been. This pull request strips it off when needed,

Note: Items 1, 2, and 3 are not ROOT6 specific. The fixes and tests there will be back ported to 7_1_X.
Item 1 may be backported further if offline management wants it.

Please merge this in the ROOT6 branch promptly unless there are issues.

[cmsbuild]

A new Pull Request was created by @wmtan for CMSSW_7_1_ROOT6_X.

Fix introspection of C array data members

It involves the following packages:

CondCore/ORA
DataFormats/Common
DataFormats/TestObjects
FWCore/Utilities

@apfeiffer1, @Dr15Jones, @cmsbuild, @nclopezo, @ggovi, @Degano, @ktf can you please review it and eventually sign? Thanks.
@ghellwig this is something you requested to watch as well.
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