Log Message:
editors/emacs24: Fix DragonFly build

In order to fix the build on DragonFly, the locations of the crt files
had to be defined.  This was tricky as DragonFly has two base compilers
so gcc --print-libgcc-file-name was used to determine the path of the
crt files.

Also patch-iisp_files.el was removed.  It was removed from distinfo 5
weeks ago, but the patch itself was left in place causing "patch ignored"
warnings.