7030249: Eliminate use of LoadLibrary and other clean-ups

[Alan Bateman]

Dmytro Sheyko wrote:
> :
>
> Why we obtain HMODULE for kernel32 this way:
>
>      // get handle to kernel32
>      if (GetModuleHandleExW((GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
>                              
> GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT),
>                             (LPCWSTR)&CreateFileW, &h) != 0)
>      {
>          ...
>
>
> instead of
>
>      handle = GetModuleHandle("kernel32");
GetModuleHandleExW allows you to provide the address of a function in 
the library that you need the handle for and so you avoid issues when 
multiple libraries with the same name are loaded.

> :
>
> Also according to MSDN GetModuleHandleEx requires at minimum "Windows 
> XP" or "Windows Server 2003". It means that we do not support "Windows 
> 2000", right?
I don't think it's been possible to install or run jdk7 on Windows 2000 
for some time.

-Alan