The current makefiles generate invalid LD_LIBRARY_PATHs like:

    LD_LIBRARY_PATH="../alib2std/lib-release;../alib2common/lib-release;lib-release" test-bin-release/alib2test

Standard directory separator on Unix/Linux systems is a colon. I found
that semicolon may be used to separate two lists of directories - the
first one is searched before the list(s) supplied on the command line,
the second one is searched after. But that's apparently not the case
here.

It seems that glibc doesn't care about it, because it somehow works on
Jenkins that runs on Gentoo. However, more correct libc libraries, like
musl libc, do care about it and don't accept such LD_LIBRARY_PATH.

This reverts commit 8e70f865.

This reverts commit b2a1e29d.

This reverts commit 4453a5cd.

Conflicts:
	acompaction2/makefile
	acompare2/makefile
	aconversions2/makefile
	aconvert2/makefile
	aderivation2/makefile
	adeterminize2/makefile
	aecho2/makefile
	aepsilon2/makefile
	agenerate2/makefile
	aintegral2/makefile
	alangop2/makefile
	aminimize2/makefile
	anormalize2/makefile
	arand2/makefile
	arename2/makefile
	areverse2/makefile
	arun2/makefile
	astat2/makefile
	astringology2/makefile
	atrim2/makefile
	tniceprint/makefile

For better Jenkins CI integration.