test-build tarball for gnuplot 5.0.7

[sfeam <sf...@us...>]

I have uploaded a tarball for 5.0.7 to the "5.0 Release Candidates" 
area on SourceForge.

https://sourceforge.net/projects/gnuplot/files/gnuplot/5.0%20release%20candidates/
	gp507-buildtestonly.tar.gz

Please use this only to test building and packaging on Windows
or other platforms.     I will wait for reports of success or problems
before uploading an official release of the 5.0.7 source tarball to
its own separate release directory on SourceForge.

gnuplot 5.0.7 will probably be the last release in the 5.0 series.
After this we can concentrate attention on releasing 5.2 and
continued development in 5.3.

	thanks for testing when you have time (there is no hurry)

		Ethan