RFR(XS): 8168490: Use the LL/ULL suffixes to define 64-bit integer literals on Windows

[Volker Simonis]

Hi,

can I please have a review and sponsor for the following trivial fix:

http://cr.openjdk.java.net/~simonis/webrevs/2016/8168490/
https://bugs.openjdk.java.net/browse/JDK-8168490

Currently we use the i64/ui64 suffixes to declare 64-bit integer
literals on Windows (see
src/share/vm/utilities/globalDefinitions_visCPP.hpp).

Unfortunately this suffix is not known to Eclipse so most of a hotspot
files have errors in an Eclipse project (e.g. NULL is defined as
'0i64' which gives a syntax error in Eclipse, but NULL is used in most
hotspot of the source files).

Fortunately VS supports the more standard conforming LL/ULL suffixes
(see http://en.cppreference.com/w/cpp/language/integer_literal) since
at least VS2010 (see
https://msdn.microsoft.com/en-us/library/00a1awxf(v=vs.100).aspx).I
therefore propose to change the suffix for integer literals from
i64/ui64 to LL/ULL on Windows.

Thank you and best regards,
Volker