Address RT bugs #88786, #88269, #78848, and #79477

Makefile.PL now respects live-tests and no-live-tests, and allows library
and header locations to be specified via the command line arguments libpath
and incpath, respectively.

These options can also be specified using the environment variables

CRYPT_SSLEAY_LIVE_TEST_WANTED
OPENSSL_LIB
OPENSSL_INC

Also fixed a number of embarrasing logic errors and typos introduced in
previous versions.