Repatch (from linux) of OSX IRAF

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+CL -- This directory contains the sources for the IRAF command language (CL).
+The command language is implemented as a C program upon the IRAF VOS, using an
+interface called LIBC (the C runtime library).  LIBC is documented in the
+source directory for the LIBC package, sys$libc.  LIBC provides a C language
+binding for the IRAF VOS, plus an implementation of the UNIX "stdio" library. 
+
+To compile the CL, the libraries comprising the IRAF VOS must first be compiled
+and installed in lib$.  In addition the CL uses LIBC and two graphics
+libraries, libstg.a (the STDGRAPH graphics kernel) and libcur.a (cursor mode,
+for cursor type CL queries).  A number of global include files are also
+required and will be found in host$hlib/libc.  The file <iraf.h> must be
+installed in a public directory where it can be found by the C compiler on your
+system. 
+
+Given these libraries the CL may be compiled and linked simply by typing
+"mkpkg" in this directory.  Typing "mkpkg update" will make the CL and
+"install" the executable in the iraf$bin directory.