Fixed process attaching for GDB
Prevented the shell buffer in Windows.

I can't get it to work without PTY
Made (partial) Windows support official
Add the function vebugger#util#getToolFullPath
Merge branch 'add-framework-for-taking-path-from-global-variables' into add-mdbg-support
Add MDBG support(Windows only of course...)
Added Mdbg to the vimdoc and the readme