Updates for 7.8 and above

[wenzeslaus]

These are some minimum changes needed for 7.8 and couple fixes to in the dependencies to make them more up to date and run on Linux. On failure, the configure step shows the log file. Unfortunately and importantly, this still does not compile (but the current master doesn't either for me on Linux and on Travis on macOS).

This adds a GitHub Action build on Linux and macOS. On macOS, it configures, but the build fails in almost every directory (the output is currently truncated, so the actual error is not visible). The Linux build ends with configure error when checking GDAL:

$PREFIX/bin/x86_64-conda_cos6-linux-gnu-cc -o conftest -march=nocona -mtune=haswell -ftree-vectorize -fPIC -fstack-protector-strong -fno-plt -O2 -ffunction-sections -pipe -isystem $PREFIX/include -fdebug-prefix-map=$SRC_DIR=/usr/local/src/conda/grass-7.8.2 -fdebug-prefix-map=$PREFIX=/usr/local/src/conda-prefix  -I$PREFIX/include -DNDEBUG -D_FORTIFY_SOURCE=2 -O2 -isystem $PREFIX/include  -I$PREFIX/include -Wl,-O2 -Wl,--sort-common -Wl,--as-needed -Wl,-z,relro -Wl,-z,now -Wl,--disable-new-dtags -Wl,--gc-sections -Wl,-rpath,$PREFIX/lib -Wl,-rpath-link,$PREFIX/lib -L$PREFIX/lib -Wl,--export-dynamic  -L$PREFIX/lib conftest.c  -L$PREFIX/lib -lgdal -lcrypto -L$PREFIX/lib -ltiledb -L$PREFIX/lib -lpoppler -ljson-c -L$PREFIX/lib -L$PREFIX/lib -lfreexl -L$PREFIX/lib -lgeos_c -L$PREFIX/lib -lsqlite3 -L$PREFIX/lib -lkmlbase -lkmldom -lkmlengine -lkmlxsd -lkmlregionator -L$PREFIX/lib -lexpat -L$PREFIX/lib -lxerces-c -lpthread -L$PREFIX/lib -lopenjp2 -L$PREFIX/lib -lnetcdf -lmfhdf -ldf -lhdf5_hl -lhdf5 -lrt -lpthread -lz -ldl -lm -lcurl -L$PREFIX/lib -lhdf5 -L$PREFIX/lib -lmfhdf -ldf -lgif -L$PREFIX -L$PREFIX/lib -ljpeg -L$PREFIX/lib -lgeotiff -L$PREFIX/lib -ltiff -L$PREFIX -L$PREFIX/lib -lpng -L$PREFIX -L$PREFIX/lib -lcfitsio -L$PREFIX/lib -lpq -lzstd -llzma -L$PREFIX/lib -lproj -lz -L$PREFIX -L$PREFIX/lib -lpthread -lm -lrt -ldl -L$PREFIX/lib64 -L$PREFIX/lib -ldap -ldapserver -ldapclient -L$PREFIX/lib -lcurl -L$PREFIX/lib -lxml2 -L$PREFIX/lib -lz -L$PREFIX/lib -llzma -L$PREFIX/lib -L$PREFIX/lib -licui18n -licuuc -licudata -lm -ldl -lpthread -luuid -L$PREFIX/lib -lspatialite -lpcre -L$PREFIX/lib -lcurl -L$PREFIX/lib -lxml2 -L$PREFIX/lib -lz -L$PREFIX/lib -llzma -lpthread -L$PREFIX/lib -lm -ldl -L$PREFIX/lib -lkea -L$PREFIX/lib -lhdf5 -lhdf5_hl -lhdf5_cpp 1>&5
...
$PREFIX/bin/../lib/gcc/x86_64-conda_cos6-linux-gnu/7.3.0/../../../../x86_64-conda_cos6-linux-gnu/bin/ld: warning: libcrypto.so.1.0.0, needed by $PREFIX/lib/libdap.so, not found (try using -rpath or -rpath-link)
$PREFIX/bin/../lib/gcc/x86_64-conda_cos6-linux-gnu/7.3.0/../../../../x86_64-conda_cos6-linux-gnu/bin/ld: $PREFIX/lib/libgdal.so: undefined reference to `libdap::Error::get_error_message[abi:cxx11]() const'