Added some documentation to GRIBIO, fixed the documentation of FilterStdDev, improved the regex for the sun test, significantly improved code coverage by adding lots of different filters and interpolations (both 1D and 2D). The meteo files have been tweaked in order to contain precipitation for the reference time step.

- Befor each test run make a distclean
- Corrected Valgrind starting script so that CMake cache is correct initialised

Change start script, so that independent where ctest is installed, ctest runs ! (but need to be somwhere in the PATH definited locations !!)

Improved error message when reaching outside of an array in debug mode and fixed a stupid allocation bug (swapping two lines in the last commit triggered this bug)

Add the testing scripts for the cron job. A single cron job is now necessary, calling startScript.sh.

The GSN plugin is now turned off by default (it was causing too much trouble with Windows and popc). Extra search paths have been added to FindPopc for convenience. FindMeteoIO can now test if POPC is defined and tweak the searched name accordingly; but since the search result is cached with something like
	SET(POPC_EXT "popc")
	SET(METEOIO_LIBRARY "METEOIO_LIBRARY-NOTFOUND" CACHE FILEPATH "Cleared." FORCE)
	FIND_PACKAGE(MeteoIO)

Fixed some spelling mistakes in the tests, improved USE_IMIS_HNW comment in ImisIO, improved the serailize method in Meteo2DInterpolator (but it is not working yet and anyway of little interest), fixed a casting warning in MathOptim. Some warnings are now turned off for POPC.

New warnings have been tried to detect variable shadowing (one variable declared with the same name as another one), alignement issues, etc. This produces very verbose output (not all warnings are legitimate) but allowed to fix lots of cases of misalignement and shadowing issues. These options have been left in the CMakeLists but NOT enabled (since these warnings are not so easy to interpret).

The checkEpsilonEquality method has been implemented as a specialized method for arrays of doubles. This is now used by the 2D_interpolations test. The sun test now calls numdiff for checking the results. 

trying to get the sun test to work properly... the comparison between ref and current should still be done using a relative error instead of a string comparison!

Cleaner definition of epsilon in MeteoData. Finally, working 2D_interpolations test (with reference files and relying on numdiff).

-Attantion: Valgrind (MemoryCheck) still not work..... :-(

A small change in FindMeteoIO has been ported from Snowpack (looking for headers in METEOIO_ROOT, useful for non-install systems). The == operator for Coords now also checks the altitude. Merge methods for MeteoData and vectors of MeteoData have been implemented, following issue 45. This allows to easily reads data from multiple IOManagers and merge them together before further processing (spatial interpolations, etc).

There were several paths that would built an array while leaving its keep_nodata flag uninitialized. This has been fixed. When resizing arrays, the old content could be kept. This is not really intuitive, so now a clear() is forced before all resize.

Small update to the SMET specs, fixed some stupid bugs in data_converter and added a wind velocity threshold for the Tretyakov undercatch correction (since the fit were done on wind speeds way lower than what Elena had). Such thresholds might generally be required for the undercatch correction...

Fixed a warning with codeblocks, fixed a bug that prevented MeteoData from compiling and improved detection of MeteoIO (but paths with spaces are still not working properly in some cases).

The MeteoData == operator now compares with an epsilon. The chekEpsilonEquality function has been rewritten, according to best practise and inlined. The powN functions have been moved to MathOptim and inlined. This makes the benchmarks 2% faster, that's such a victory...

Fixed a warning with XCode 4.3 on osX. Tried to make a more standard use of c++ (relying on std::fill for filling vectors, relying on vector.resize(sixe, value) instead of manually initializing a vector, etc). A few more const added where appropriate. It makes the benchmarks slightly faster...

Pushed documentation version number, more robust file globing for the libraries, more standard uppercase/lowecase conversion and the extra parameters in SMET are now forced to uppercase (so all parameters are uppercase when they come out of the plugins).

Since the autotools are obsolete (and unmaintained) in MeteoIO, they have been removed. The popc++ version can be compiled with cmake (with some tricks: disable GSN and force the compiler to popcc). 

For consistency, the various definitions of ot_deg and to_rad have been suppressed and replaced by Cst::to_deg or Cst::to_rad. Some mentions of the Earth's radius have been replaced by Cst::earth_R0. In Coords, some variables have been declared as const.

The example Makefile should now be more robust while remaining simple. The FindMeteoIO macro has been simplified and a FindMeteoIOPOPC created