Implement the generated dependency with a stamp file to avoid needless
recompiling of the test programs. Add some RCS ids.

fix test after the errno reshuffle; ok swarsche@

deal with the el_errno -> read_errno cleanup, read.c rev. 1.43

cope with simplified chared/read interface

adapt to recently changed internal interface of read_getcmd()

cope with the deletion of Char, use wchar_t

initialize el_state.metanext before testing read_getcmd()

More unit tests for libedit.
Those that still fail are commented out in the Makefiles for now;
i have patches for them.