For building UnixPkg in CYGWIN, it should use gcc binded by CYGWIN but not the 4.2 gcc which support PE.
For building UnixPkg in CYGWIN, it should use gcc binded by CYGWIN but not the 4.2 gcc which support PE.

git-svn-id: 5648d1bec6962b0a6d1d1b40eba8cf5cdb62da3d@2504 6f19259b-4bc3-4df7-8a09-765794883524

MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2