Imported Healpix, cfitsio, cosmotool. Added cmake tool to build dependencies (cfitsio, hdf5, netcdf, boost, healpix, gsl, ..). Adjusted CMakeLists.txt

external/cfitsio/README.MacOS

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+To build CFITSIO library on an Intel Mac as a Universal Binary
+
+Unzip the library:
+- tar xzf cfitsio3060.tar.gz (or whatever version this is)
+
+- cd cfitsio/
+
+- copy the cfitsio-xcodeproj.zip file here
+
+- unzip cfitsio-xcodeproj.zip
+
+- start Xcode and open cfitsio.xcodeproj
+
+- expand the "Targets" menu under "Groups & Files" 
+
+- choose one of the following build options:
+
+  * right-click on Build PPC -> Build "Build PPC"
+
+  * right-click on Build i386 -> Build "Build i386"
+
+  * right-click on Build x86_64 -> Build "Build x86_64"
+
+  * right-click on Build Universal -> Build "Build Universal"
+    (Builds all three of the above options, i.e. a Universal Binary
+     usable on ppc, i386, and x86_64 architectures)
+
+  (For some reason clicking on the menu "Build" icon doesn't seem to
+   work correctly, but the right-click menus do).
+
+-------------------------------------------------------
+
+Another way to build the universal binary:
+
+- unpack the cfitsio source code tar file
+- cd cfitsio
+
+Set the CFLAGS environment variable for building a Universal Binary:
+
+  C-Shell variants:
+  setenv CFLAGS "-arch ppc -arch i386 -arch x86_64 -g -O2"
+
+  Bourne Shell variants:
+  export CFLAGS="-arch ppc -arch i386 -arch x86_64 -g -O2"
+
+Then proceed with the standard cfitsio build, i.e.:
+
+- ./configure
+- make
+- make install
+
+
+-------------------------------------------------------
+
+Below, are the old (and now obsolete) instructions for building CFITSIO
+on classic Mac OS-9 or earlier versions:
+
+1. Un binhex and unstuff cfitsio_mac.sit.hqx
+2. put CFitsioPPC.mcp in the cfitsio directory.
+2. Load CFitsioPPC.mcp into CodeWarrior Pro 5 and make.
+   This builds the cfitsio library for PPC.  There are also targets for both 
+   the test program and the speed test program.
+
+To use the MacOS port you can add Cfitsio PPC.lib to your Codewarrior Pro 5
+project.  Note that this only has been tested for the PPC. It probably
+won't work on 68k macs.  Also note that the fortran bindings aren't
+included.  I haven't worked with the codewarrior f2c plugin so I don't know
+how these would work.  If one is interested, please write and I can look
+into this.
+