Use correct header include for _fullpath

According to http://msdn.microsoft.com/en-us/library/506720ff(v=vs.120).aspx
Add scripts for building using mingw compiler with distcc
Refer to external repository for instructions on setting up Fedora to cross compile Ardour using MinGW-64
Add script to copy package directory to directory shared by VM

directory path set in ARDOUR_VM_SHARE_DIR
Remove two scripts no longer used

These scripts are too specific to my virtual machine setup, a more generic
method can now be used by setting ARDOUR_VM_SHARE_DIR and using the
cptovmshare.sh script.
Add two scripts for running gdb so source listing works when debugging

Updated Debugging section in README
Updates to windows/mingw README file
Only call define versions script in mingwenv after a build is successful

This stops clean.sh script complaining about a non-existant path
Use DEBUG flag as defined by tools/define_versions.sh in mingw build
Don't include *.debug files in debug package

These files slow down gdb at startup and many(any?) don't seem
to work correctly
Strip all executables in a mingw release build
Use new version variable in windows packaging scripts
Move environment setup to run tests in wine to new file
Rename run-wine script to wine-ardour and run library tests from new scripts
Add ability to run single libardour tests using wine
Add --list option to script to run ardour tests with wine
A few basic tests for AudioEngine
Add README to mingw package