This CR is for the preparation work for converting java web start native code to unicode.
for the latest change which was pushed, see attached webrev.zip.
It should be almost identical to the above webrev page.
Added macros in DeployPlatfom.h for windows, macosx, and unix platforms so that common javaws code can make use of them regardless of UNICODE enabled or not.
For the areas which require more investigations for UNICODE conversion, use #pragma message as follows:
#pragma message("some message")