cmake: Fix for MSVC2010 project generation

Fixed issue with static build for MSVC2010.

After some investigation I've discovered known issue
http://public.kitware.com/Bug/view.php?id=11240 When .rc file is linked
to static lib it fails with following linker error

LINK : warning LNK4068: /MACHINE not specified; defaulting to X86
file.obj : fatal error LNK1112: module machine type 'x64' conflicts with
target machine type 'X86'

Fix add target property /MACHINE: for MSVC generation.

Also removed old workarounds - it caused errors during msvc build.

Bug: http://curl.haxx.se/mail/lib-2013-07/0046.html