Update squish packages

This will update squish packages to 5.1.1 version for Windows 7.
Update packages are MinGW, msvc10, msvc11 and msvc12 for win32 and
msvc12 for win64.

Change-Id: Iba38997fd4e5fcff58b613215d594f262696fa0b
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@digia.com>