Added cmake infrastructure

+findcxx11

fixed syntax

updated README

Removed autotools

Update CMakeLists.txt

Add make package_source target using cpack

Do not use DIRECTORY

Add SYMLINK_ALL_TRIPLETS option

updated README

use -ccc-host-triple on clang<=3.0

set MINGW_PATH

Set release build type

Add warning flags

ignore build dir

restored cleanup.sh & package.sh

Fixed cleanup.sh

Fixed cleanup.sh

cxx1: also try     -std=gnu++0x

cxx11: try it before
follow mingw-gcc symlinks
Stop if mingw-gcc is not in the clang directory
Cleanup cmakelists
Use wildcard in symlink.
cmake fixes