Compile on Freebsd (#1044)

* Compile on Freebsd

Small changes needed for compilation on Freebsd. Note that you'll have
to pass -DEQEMU_BUILD_ZLIB=OFF on the cmake command line. The bundled
zlib-ng does not build on Freebsd even though mainline zlib-ng does.

* Fix build errors: typo

common/crash.cpp

@@ -118,6 +118,11 @@ void set_exception_handler() {
 #include <unistd.h>
 #include <sys/fcntl.h>
 
+#ifdef __FreeBSD__
+#include <signal.h>
+#include <sys/stat.h>
+#endif
+
 void print_trace()
 {
 	auto uid = geteuid();

common/proc_launcher.h

@@ -24,6 +24,10 @@
 #include <vector>
 #include <map>
 
+#ifdef __FreeBSD__
+#include <unistd.h>
+#endif
+
 //I forced this object to become a singleton because it registers its
 //signal handler for UNIX
 class ProcLauncher {

common/util/uuid.cpp

@@ -14,6 +14,10 @@
 #include <CoreFoundation/CFUUID.h>
 #endif
 
+#ifdef __FreeBSD__
+#include <uuid.h>
+#endif
+
 unsigned char hexDigitToChar(char ch)
 {
 	if (ch > 47 && ch < 58)
@@ -126,6 +130,15 @@ EQ::Util::UUID EQ::Util::UUID::Generate()
 
 	return buffer;
 #endif
+
+#ifdef __FreeBSD__
+	uuid_t l_id;
+	char l_uuid[37];
+	uint32_t l_ignored;
+	uuid_create(&l_id, &l_ignored);
+	uuid_to_string(&l_id, (char**) &l_uuid, &l_ignored);
+	return FromString(l_uuid);
+#endif
 }
 
 EQ::Util::UUID EQ::Util::UUID::FromString(const std::string &str)