Fix handling of Ctrl-C
* Configure GCC with prefix /mingw{32,64}
* Compress folder without copying
Remove directory only if exists.
Make folder name some shorter
Move GCC libexec directory to lib
Revert "Move GCC libexec directory to lib"

This reverts commit df0eab4c553d3f5226b1a47d0992ea341da51e29.
Merge pull request #147 from Alexpux/develop

Some fixes for compressing and GCC prefix