Remove gdal

[ctieben]

So, after more than two weeks the GDAL dependency finally is removed from sempr.

The major changes are:

• All spatial types are changed from GDAL OSG to GEOS GEOM geometries.
• Traits are updated to store the changed types
• Global transformation and projection are changed to the GeographicLib
• Support for WGS84, ECEF, LTG, UTM, UPS, MGRS added
• Exclusive support of WGS84 as base reference system (no GRH80 or ...)
• Update and add unit tests for geometry and transformations
• Update CMake and CI and ReadMe based of the dependency changes
• Add CTest support.

This pull will close #23 and #19.

[niniemann]

The tests seem inconsistent: Running make test everything seems fine:

Running tests...
Test project /home/nils/sempr/build
    Start 1: sempr_storage_test
1/5 Test #1: sempr_storage_test ...............   Passed    1.02 sec
    Start 2: sempr_RDFPropertymap_test
2/5 Test #2: sempr_RDFPropertymap_test ........   Passed    0.16 sec
    Start 3: sempr_queries_test
3/5 Test #3: sempr_queries_test ...............   Passed    0.28 sec
    Start 4: sempr_geometries_tests
4/5 Test #4: sempr_geometries_tests ...........   Passed    0.28 sec
    Start 5: sempr_spatial_index_tests
5/5 Test #5: sempr_spatial_index_tests ........   Passed    0.01 sec

100% tests passed, 0 tests failed out of 5

But ./test/sempr_test_bin fails:

unknown location(0): fatal error in "geometries_cloneable": signal: SIGSEGV, si_code: 0 (memory access violation at address: 0x00000080)
/home/nils/sempr/test/test_utils.hpp(105): last checkpoint

*** 1 failure detected in test suite "C++ Unit Tests for SEMPR_TK"

EDIT: Forget it. As you told me: The sempr_test_bin is a remainder of an old build and does not exist anymore. :)