A few tests assumes that the CYCLE timer is always available,
which is not true on some platforms (e.g. ARM).
Fixing the tests not to reply on the CYCLE availability.
Remove some more leftovers from the initial removal:
o Update relevant mentions of configure.in throughout
the source code.
o Remove win/configure.js, which at this point just
duplicates logic already present in CMake based build
system.
o Remove support files which relied on the autotools
build system. In any case, MySQL is no longer officially
supported on SCO.
o Remove files which are no longer part of the build.
