This change adds a new pointer alias CPtr, that should always only
contains pointers to C allocated memory and should always used for
such pointers in order to keep them separate from Go pointers more
easily. This is helpful, since only CPtr are allowed to be stored in
C allocated memory, and Go pointers can only be passed to C functions
if they don't point to memory not containing Go pointers again, that
is all pointers in such memory must be CPtr.
The change also adds aliases for C.malloc and C.free that return and
accept the CPtr type as a little safety measure.
Additionally there are some useful constants defined.
Signed-off-by: Sven Anderson <sven@redhat.com>
Sven Anderson