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

4 files changed, 15 insertions, 21 deletions

diff --git a/test/cli/CMakeLists.txt b/test/cli/CMakeLists.txt
index cf4192d7..0f86ca3d 100644
--- a/test/cli/CMakeLists.txt
+++ b/test/cli/CMakeLists.txt
@@ -10,9 +10,9 @@ proj_add_test_script_sh("test27" PROJ_BIN)
 proj_add_test_script_sh("test83" PROJ_BIN)
 proj_add_test_script_sh("testproj" PROJ_BIN)
 proj_add_test_script_sh("testvarious" CS2CS_BIN)
-proj_add_test_script_sh("testdatumfile" CS2CS_BIN "connu")
-proj_add_test_script_sh("testIGNF" CS2CS_BIN "ntf_r93.gsb")
-proj_add_test_script_sh("testntv2" CS2CS_BIN "ntv2_0.gsb")
+proj_add_test_script_sh("testdatumfile" CS2CS_BIN)
+proj_add_test_script_sh("testIGNF" CS2CS_BIN)
+proj_add_test_script_sh("testntv2" CS2CS_BIN)
 proj_add_test_script_sh("testprojinfo" PROJINFO_BIN)
 proj_add_test_script_sh("testcct" CCT_BIN)
 if(BUILD_PROJSYNC_DATA)
diff --git a/test/cli/Makefile.am b/test/cli/Makefile.am
index 7ff42016..4d11eaf3 100644
--- a/test/cli/Makefile.am
+++ b/test/cli/Makefile.am
@@ -47,19 +47,13 @@ testvarious-check:
 	PROJ_SKIP_READ_USER_WRITABLE_DIRECTORY=YES PROJ_LIB=$(PROJ_LIB) $(TESTVARIOUS) $(CS2CSEXE)
 
 testdatumfile-check:
-	@if [ -f $(PROJ_LIB)/conus -a -f $(PROJ_LIB)/ntv1_can.dat -a -f $(PROJ_LIB)/MD -a -f $(PROJ_LIB)/ntf_r93.gsb -a -f $(PROJ_LIB)/egm96_15.gtx ]; then \
-	  PROJ_SKIP_READ_USER_WRITABLE_DIRECTORY=YES PROJ_LIB=$(PROJ_LIB) $(TESTDATUMFILE) $(CS2CSEXE) ; \
-	fi
+	PROJ_SKIP_READ_USER_WRITABLE_DIRECTORY=YES PROJ_LIB=$(PROJ_LIB) $(TESTDATUMFILE) $(CS2CSEXE)
 
 testign-check:
-	@if [ -f $(PROJ_LIB)/ntf_r93.gsb ] ; then \
-	  PROJ_SKIP_READ_USER_WRITABLE_DIRECTORY=YES PROJ_LIB=$(PROJ_LIB) $(TESTIGN) $(CS2CSEXE) ; \
-	fi
+	PROJ_SKIP_READ_USER_WRITABLE_DIRECTORY=YES PROJ_LIB=$(PROJ_LIB) $(TESTIGN) $(CS2CSEXE)
 
 testntv2-check:
-	@if [ -f $(PROJ_LIB)/ntv2_0.gsb -a -f $(PROJ_LIB)/conus -a -f $(PROJ_LIB)/ntv1_can.dat ] ; then \
-	  PROJ_SKIP_READ_USER_WRITABLE_DIRECTORY=YES PROJ_LIB=$(PROJ_LIB) $(TESTNTV2) $(CS2CSEXE) ; \
-	fi
+	PROJ_SKIP_READ_USER_WRITABLE_DIRECTORY=YES PROJ_LIB=$(PROJ_LIB) $(TESTNTV2) $(CS2CSEXE)
 
 testcct-check:
 	PROJ_SKIP_READ_USER_WRITABLE_DIRECTORY=YES PROJ_LIB=$(PROJ_LIB) $(TESTCCT) $(CCTEXE)
diff --git a/test/cli/ntv2_out.dist b/test/cli/ntv2_out.dist
index d90fdc37..890a649b 100644
--- a/test/cli/ntv2_out.dist
+++ b/test/cli/ntv2_out.dist
@@ -3,27 +3,27 @@ Point in the ONwinsor subgrid.
 82d00'00.000"W 42d00'00.000"N 0.0	81d59'59.6104"W	42d0'0.1602"N 0.000
 82d00'01.000"W 42d00'00.000"N 0.0	82d0'0.6104"W	42d0'0.1602"N 0.000
 82d00'02.000"W 42d00'00.000"N 0.0	82d0'1.6104"W	42d0'0.1602"N 0.000
-84d00'00.000"W 42d00'00.000"N 0.0	83d59'59.8593"W	42d0'0.18"N 0.000
+84d00'00.000"W 42d00'00.000"N 0.0	83d59'59.8623"W	42d0'0.1807"N 0.000
 ##############################################################
 Try with NTv2 and NTv1 together ... falls back to NTv1
-99d00'00.000"W 65d00'00.000"N 0.0	99d0'1.5885"W	65d0'1.3482"N 0.000
+99d00'00.000"W 65d00'00.000"N 0.0	99d0'1.5926"W	65d0'1.3478"N 0.000
 111d00'00.000"W 46d00'00.000"N 0.0	111d0'3.1897"W	45d59'59.7489"N 0.000
-111d00'00.000"W 47d30'00.000"N 0.0	111d0'2.7989"W	47d29'59.9896"N 0.000
+111d00'00.000"W 47d30'00.000"N 0.0	111d0'2.8054"W	47d29'59.9899"N 0.000
 ##############################################################
 Switching between NTv2 subgrids
--112.5839956 49.4914451 0	-112.58307487	49.49145197 0.00000000
+-112.5839956 49.4914451 0	-112.58307621	49.49144267 0.00000000
 ##############################################################
 Interpolating very close (and sometimes a bit outside) to the edges a NTv2 subgrid (#209)
 -115.58333333 51.25000000 0	-115.58228512	51.24997866 0.00000000
 -115.58333333 51.25000010 0	-115.58228512	51.24997876 0.00000000
 -115.58333334 51.25000000 0	-115.58228513	51.24997866 0.00000000
--115.49166667 51.07500000 0	-115.49062909	51.07497666 0.00000000
--115.49166668 51.07500000 0	-115.49062910	51.07497666 0.00000000
--115.49166667 51.07499990 0	-115.49062909	51.07497656 0.00000000
+-115.49166667 51.07500000 0	-115.49063575	51.07497568 0.00000000
+-115.49166668 51.07500000 0	-115.49063576	51.07497568 0.00000000
+-115.49166667 51.07499990 0	-115.49063575	51.07497558 0.00000000
 ##############################################################
 Attempt first with ntv2_0.gsb and then conus
 -111.5 45.26	-111.50079772	45.25992835 0.00000000
 ##############################################################
 NAD27 -> NAD83: 1st through ntv2, 2nd through conus
-55d00'00.000"N 111d00'00.000"W 0.0	55d0'0.366"N	111d0'3.251"W 0.000
+55d00'00.000"N 111d00'00.000"W 0.0	55d0'0.367"N	111d0'3.231"W 0.000
 39d00'00.000"N 111d00'00.000"W 0.0	38d59'59.912"N	111d0'2.604"W 0.000
diff --git a/test/cli/td_out.dist b/test/cli/td_out.dist
index cf4b8d73..ab0c0911 100644
--- a/test/cli/td_out.dist
+++ b/test/cli/td_out.dist
@@ -29,4 +29,4 @@ NAD27 -> NAD83: 1st through ntv1 or ntv2, 2nd through conus
 39d00'00.000"N 111d00'00.000"W 0.0	39.0000	-111.0007 0.0000
 ##############################################################
 WGS84 -> WGS84+EGM96
-2dE 49dN 0	2.00	49.00 -44.64
+2dE 49dN 0	2.00	49.00 -45.06