Warn only in presence of  an attempt of adding a non-std class

to TClassTable.
Improvement of dictionary generation

Now GenerateInitInstance is not created in presence of an std class
which is not a string.
This is achieved checking if the decl for which the dictionary is
created is of a certain type, expressed by a string.
This is more robust than any string manipulation.
As for the performance, a more aggressive implementation could
be put in place with for example a hashed map (unordered_map in
c++11) with as key the names of types and as vals the pointer to
the CXXRecordDecls corresponding to the actual definition of the
class.
Add note
Avoid reading past the end of a static buffer.

llvm::sys::fs::identify_magic takes a StringRef which
was automatically created from a the char[1024] buffer.
To create the StringRef automatically requires a call to
strlen but in this case the buffer is by definition not
null terminated.  We could either null terminate or better
yet just construct explicit the 'right' StringRef.
Change the way the string input is done in the Pad toolbar for text and Pave Label.
It doesn't use anymore the TGX11 function RequestString.
Now the text appears directly as it will show and it is possible to enter several text string.
The input is not block in the RequestString event loop.
TPad
Fix ROOT-5734

Now tags like
<class name="FOO">
never closed are not silently ignored, but an error occours.
Fix ACLiC library dependency.

The library created by ACliC must also depends on the header file
that are not used by the users directly but are added as part
of the dictionary.
remove extraneous space
rejig pyclass cache lookups to make sure they are always done
Fix typo
Fix assert
In TClass::GetClass allow the class name to start with "class " or "struct " for compatiblity with some type spelling
don't unzip and tar tv unnecessarily the unuran tar file. Fixes ROOT-5735.
possible fix for Windows.
Blanks
The static consts end up in the lib's datasection, we need to force generation of the symbol.
Fix ROOT-5744

Treat all properties as strings.
Remove int property from TClassAttributeMap.
Fix windows return type difference for offset between ptrdiff_t and long.