Set to NULL the two static char pointers, trace_destination_name and
trace_destination_backup_name. Otherwise, there is a double free if
someone tries to release the same memory more than once (calling the
Log_terminate() function twice).

==5781== Invalid free() / delete / delete[] / realloc()
==5781==    at 0x4C29CF0: free (vg_replace_malloc.c:530)
==5781==    by 0x40DF4C: Log_terminate (Log.c:225)
==5781==  Address 0x5495c20 is 0 bytes inside a block of size 13 free'd
==5781==    at 0x4C29CF0: free (vg_replace_malloc.c:530)
==5781==    by 0x40DF4C: Log_terminate (Log.c:225)
==5781==  Block was alloc'd at
==5781==    at 0x4C28BF6: malloc (vg_replace_malloc.c:299)
==5781==    by 0x40D881: Log_initialize (Log.c:139)
==5781==
==5781== Invalid free() / delete / delete[] / realloc()
==5781==    at 0x4C29CF0: free (vg_replace_malloc.c:530)
==5781==    by 0x40DF79: Log_terminate (Log.c:227)
==5781==  Address 0x5495c70 is 0 bytes inside a block of size 15 free'd
==5781==    at 0x4C29CF0: free (vg_replace_malloc.c:530)
==5781==    by 0x40DF79: Log_terminate (Log.c:227)
==5781==  Block was alloc'd at
==5781==    at 0x4C28BF6: malloc (vg_replace_malloc.c:299)
==5781==    by 0x40D8B6: Log_initialize (Log.c:141)
Signed-off-by: Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>

Link with OpenSSL crypto library

Signed-off-by: Otavio Rodolfo Piske <opiske@redhat.com>

Do use the OpenSSL crypto library otherwise linking of SSL versions of the libraries fail due to missing symbols
Signed-off-by: Otavio Rodolfo Piske <opiske@redhat.com>

Proposed fix for OpenSSL compilation issue on OS X

CMake fixes on Microsoft Windows

add missing OPENSSL define to CMakeLists.txt

Signed-off-by: Otavio Rodolfo Piske <opiske@redhat.com>

Signed-off-by: Otavio Rodolfo Piske <opiske@redhat.com>

Switch to cmake build on Travis CI so that it can, more easily, bypass lack of OpenSSL in newer versions of OS X
Signed-off-by: Otavio Rodolfo Piske <opiske@redhat.com>

Apple deprecated OpenSSL and stopped providing its headers on newer versions of OS X. These
changes adjust CMake build files so that they look for Brew's OpenSSL instead (or a custom
one if provided by the user).
For other systems, it uses CMake's own search to find headers/libraries.
Signed-off-by: Otavio Rodolfo Piske <opiske@redhat.com>

Signed-off-by: Otavio Rodolfo Piske <opiske@redhat.com>

Signed-off-by: Ryan Pendleton <me@ryanp.me>

Signed-off-by: Ryan Pendleton <me@ryanp.me>

The pthread library have being added to Windows build. Which
causes linking problems on Visual Studio.
Signed-off-by: Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>

Signed-off-by: Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>

WIN32 is true when the target system is Microsoft Windows, 32 and
64 bits.

UNIX is true when the target system is Unix or Unix-like (i.e. Apple,
BSD and CYGWIN).
Signed-off-by: Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>

Libraries need LIBRARY destination (for shared libraries), and
ARCHIVE for static libraries. Whereas executables need only
RUNTIME destination.
Signed-off-by: Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>