RFR: 8183552: Move align functions to align.hpp

[Stefan Karlsson]

Hi all,

Please review this patch to move the align functions to align.hpp.

http://cr.openjdk.java.net/~stefank/8183552/webrev.00
https://bugs.openjdk.java.net/browse/JDK-8183552

The patch mainly moves the functions and adding #include 
"utilities/align.hpp" lines, but it also moves ScaleForWordSize to 
globals.hpp to prevent a cyclic dependency between align.hpp and 
globalDefinitions.hpp.

Thanks,
StefanK