Following PR #806 which removed various grids from nad/, we now have
to download the BETA2007 grid before that DHDN_ETRS89 test can pass
successfully.

Make a README from README.md when running 'make dist'.

README.md is stripped from the CI status images that is displayed on GitHub, but other README is just a copy of README.md.
Adjusted travis/install.sh so that 'make dist-all' is not run on the source distribution.

All the GIGS JSON files have been converted to the gie format
and are now covered by running "make check". Therefore we no
longer need the Python setup. Removing it from the Travis CI
setup should speed up the test execution time a bit.

Download grid files as the first thing in the travis install script and
that 'make check' can be run without errors caused by missing grids.

* Enable wildcard globbing for MSVC builds

* Use globbing to run all gie tests

* Despite merge title: Also use wildcards on gie tests when using GNU compilers

Add -std=c89 to travis targets

The multistresstest code has been made C89 compliant in the process.

* Free format now in cmd lines, in gie, and in init files

* Corrected handling of defaults

* Add demo of integrated definition and validation

* Repair stack-smashing memmove in get_init

* repair paralist corruption, clean up debug output

* Install test files for nmake builds

* Add many improvements following suggestions by @schwehr

* Be consistent in requiring lower case everywhere in gie.c

Also, this Fixes #703 and Fixes #697