Setup for development of COMPTEL module.

The directory tree has been setup for the development of the COMPTEL module. Instructions have been added to the various Makefile.am and to configure.ac to detect and to configure the library for inclusing of the COMPTEL module. The pyext/setup.py.in script has also bee adapted.

A simple test case has been written for loading of COMPTEL data into an observation.

The summary include file and the summary swig files have been setup.
Add IAQ files from Werner Collmar:

u47569 is for a Phibar difference of 2 deg and a power-law on -2 over the 1-3 MeV energy range.
u47741 is for a Phibar difference of 2 deg and a power-law on -2 over the 3-10 MeV energy range.

Update also the Makefile for IAQ distribution and the unit test for checking of response loading.
Setup for development of COMPTEL module.

The directory tree has been setup for the development of the COMPTEL module. Instructions have been added to the various Makefile.am and to configure.ac to detect and to configure the library for inclusing of the COMPTEL module. The pyext/setup.py.in script has also bee adapted.

A simple test case has been written for loading of COMPTEL data into an observation.

The summary include file and the summary swig files have been setup.
Correctly return the number of energy bins.

The naxis method previously returned the number of sky pixels for the 3rd axis instead of returning the number of energy bins. This has been corrected. Now the number of energy bins is returned in naxis is called with an argument of 2.
Add COMPTEL unit test to the list of tests.

The COMPTEL unit test has not been added to the lists of test, thus no COMPTEL unit testing was performed.
Add COMPTEL library.

The COMPTEL library was added so that it gets included in GammaLib if the COMPTEL interface is selected.
Add Mercator's projection to World Coordinate System projections.

The COMPTEL data from the Goddard space flight centre are stored in the Mercator's projection. We thus implemented this project to be able to handle the data.
Implement event bin, event cube and instrument direction.

Implemented the GCOMEventBin, GCOMEventCube and GCOMInstDir classes. An extensive unit test has been written to verify the functionnality of the classes. The event cube class successfully loads COMPTEL event data, the event bin class allows access to event information.

Note that a particularily clever implementation of GCOMEventBin has been made. This class does not hold members but pointers to members. There are two modes of operations: either the class allocates the members itself, and then also takes care about the deallocation, or it just holds the pointers from someone else, and thus does not deallocate the memory on destruction. This allows GCOMEventCube to use a single GCOMEventBin object for the manipulation of event data, while at the same time, GCOMEventBin can be used standalone for event manipulation.
Added LAT to targets.

In adding the COMPTEL interface, the LAT interface was accidently removed from the SWIG targets. This has been corrected.
Merge branch 'devel' into comptel

Conflicts:
	configure.ac
	src/Makefile.am
	test/Makefile.am
Add blank line
Merge conflicts and update for COMPTEL interface inclusion.
Correctly use INST_COM instead of INCL_COM.
Include COMPTEL unit test.
Add COMPTEL dummy test.
Adapt for test suite usage.

The unit test has been adapted to use the new GammaLib test suite.
Initial version.

The COMPTEL pointing consists of a simple sky direction. No coordinate transformations are so far performed.
Bring branch ahead by one commit.
Initial version.

This initial version of the COMPTEL response class implements the loading of the IRF values and IRF definition from the FITS file. The IRF access is not yet implemented.
Correct file paths.