patch applied (ghc-6.8/ghc): Use INSTALL_SCRIPT, not INSTALL_PROGRAM, when installing scripts; fixes #1858

[Ian Lynagh]

Sat Nov 10 07:23:09 PST 2007  Ian Lynagh <igloo at earth.li>
  * Use INSTALL_SCRIPT, not INSTALL_PROGRAM, when installing scripts; fixes #1858

    M ./driver/mangler/Makefile -3 +3
    M ./driver/split/Makefile -3 +3
    M ./utils/mkdirhier/Makefile -3 +3