[Libssh] Enhancements proposals

[Rodolphe Rocca]

An other enhancement that would be really nice to see in libssh.

5) Full test suite
Regressions could be easily detected and corrected if libssh came with 
an integrated test suite. A test directory where running 'make test' 
would run all the tests.

An efficient policy would be to check-in things only if are tested.

This test suite would allow developers to :
- enable/disable code coverage to see exactly which code is tested and 
which code is not
- enable/disable memory leak detection (via valgrind)

In the end, it should be really easy to enable these features : one 
makefile macro to enable code coverage, one makefile macro to enable 
memory leak detection

Rodolphe