Added support for the version of PHP that comes with Cygwin, in addition to the existing support for running standard PHP for Windows within Cygwin.  Only in the latter case should we convert to the Windows path.
Added support for the version of PHP that comes with Cygwin, in addition to the existing support for running standard PHP for Windows within Cygwin.  Only in the latter case should we convert to the Windows path.

rodrigoprimo/wp-cli,trepmal/wp-cli,miya0001/wp-cli,aaemnnosttv/wp-cli,miya0001/wp-cli,GaryJones/wp-cli,gitlost/wp-cli,2ndkauboy/wp-cli,trepmal/wp-cli,gitlost/wp-cli,GaryJones/wp-cli,gitlost/wp-cli,aaemnnosttv/wp-cli,2ndkauboy/wp-cli,miya0001/wp-cli,aaemnnosttv/wp-cli,rodrigoprimo/wp-cli,2ndkauboy/wp-cli,trepmal/wp-cli,rodrigoprimo/wp-cli,GaryJones/wp-cli