Make tests independent of proj-datumgrid

Fixes #1984

- Copy BETA2007.gsb, MD, alaska, conus, ntf_r93.gsb, ntv1_can.dat grids
  from proj-datumgrid to data/tests.
- Replace a couple uses of nzgd2kgrid0005.gsb in tests by ntf_r93.gsb
- Add downsampled/subsetted versions of egm96_15.gtx as tests/egm96_15_downsampled.gtx
  and ntv2_0.gsb as tests/ntv2_0_downsampled.gsb
  This results in a few changes in expected results
- Simpify travis/install.sh due to less configurations to test

This results in a hopefully acceptable increase of the proj-X.Y.Z.tar.gz
from 2.9 to 5.3 MB

1 files changed, 13 insertions, 26 deletions

diff --git a/test/gie/more_builtins.gie b/test/gie/more_builtins.gie
index 78a504ff..a3e9d398 100644
--- a/test/gie/more_builtins.gie
+++ b/test/gie/more_builtins.gie
@@ -241,35 +241,27 @@ Some tests from PJ_vgridshift.c
 -------------------------------------------------------------------------------
 operation  proj=vgridshift  grids=egm96_15.gtx  ellps=GRS80
 -------------------------------------------------------------------------------
-Appears there is a difference between the egm96_15.gtx distributed by OSGeo4W,
-and the one from https://download.osgeo.org/proj/vdatum/egm96_15/egm96_15.gtx
-N(12.5, 55.5) = -36.021305084228515625  (download.osgeo.org)
-N(12.5, 55.5) = -35.880001068115234000  (OSGeo4W)
-This is annoying, but must be handled elsewhere. We jump through the hoop by
-setting a very lax tolerance.
--------------------------------------------------------------------------------
-tolerance 15 cm
-ignore    pjd_err_failed_to_load_grid
+tolerance 1 cm
 accept    12.5 55.5   0                  0
-expect    12.5 55.5 -36.021305084228516  0
+expect    12.5 55.5 -36.394090697  0
 
 accept    -180.1 0 0
-expect    -180.1 0 -21.2423
+expect    -180.1 0 -20.835222268
 
 accept    179.9 0 0
-expect    179.9 0 -21.2423
+expect    179.9 0 -20.835222268
 
 accept    180 0 0
-expect    180 0 -21.1533 
+expect    180 0 -20.756538510
 
 accept    540 0 0
-expect    540 0 -21.1533 
+expect    540 0 -20.756538510
 
 accept    -180 0 0
-expect    -180 0 -21.1533 
+expect    -180 0 -20.756538510
 
 accept    -540 0 0
-expect    -540 0 -21.1533 
+expect    -540 0 -20.756538510
 
 roundtrip 100 1 nm
 -------------------------------------------------------------------------------
@@ -285,25 +277,20 @@ expect    failure errno failed_to_load_grid
 -------------------------------------------------------------------------------
 operation  proj=vgridshift  grids=egm96_15.gtx  ellps=GRS80     multiplier=0.1
 tolerance 15 cm
-ignore    pjd_err_failed_to_load_grid
 accept    12.5 55.5   0                  0
 expect    12.5 55.5  3.6021305084228516  0
 
 -------------------------------------------------------------------------------
 Some tests from PJ_hgridshift.c
 -------------------------------------------------------------------------------
-operation  proj=hgridshift +grids=nzgd2kgrid0005.gsb  ellps=GRS80
--------------------------------------------------------------------------------
-Note: These data are home grown and suitable for regression testing only
-We need a set of authoritative test cases to test the nzgd2000 grid.
+operation  proj=hgridshift +grids=ntf_r93.gsb  ellps=GRS80
 -------------------------------------------------------------------------------
 tolerance 1 mm
-ignore    pjd_err_failed_to_load_grid
-accept    172.999892181021551 -45.001620431954613
-expect    173                 -45
+accept    2.250704350387       46.500051597273
+expect    2.25                 46.5
 direction inverse
-accept    173                 -45
-expect    172.999892181021551 -45.001620431954613
+accept    2.25                 46.5
+expect    2.250704350387       46.500051597273
 -------------------------------------------------------------------------------