These changes are designed to enable the TI compilers to compile (#1505)

Jerryscript.  The changes include:

CMakeLists.txt: we added conditionals around GCC-specific flags, added
support for TI flags, and removed the always-on debugging flag (-g)

/toolchain_mcu_tim4f.cmake: new toolchain file uses TI-specific parameters

jerry-api.h: the sys/types.h file was #include'd but never used, so we
removed it

jrt-types.h: ditto

jerry-port-default-date.c: the TI toolchain doesn't include
sys/time.h, so we guarded uses of the package

ecma-objects-general.c: added initialization that Travis (the
auto-checking tool) required

JerryScript-DCO-1.0-Signed-off-by: Timothy Harvey t-harvey@ti.com

targets/default/jerry-port-default-date.c

@@ -13,7 +13,9 @@
  * limitations under the License.
  */
 
+#ifdef __GNUC__
 #include <sys/time.h>
+#endif
 
 #include "jerry-port.h"
 #include "jerry-port-default.h"
@@ -23,6 +25,7 @@
  */
 bool jerry_port_get_time_zone (jerry_time_zone_t *tz_p)
 {
+#ifdef __GNUC__
   struct timeval tv;
   struct timezone tz;
 
@@ -39,6 +42,9 @@ bool jerry_port_get_time_zone (jerry_time_zone_t *tz_p)
   tz_p->daylight_saving_time = tz.tz_dsttime > 0 ? 1 : 0;
 
   return true;
+#else /* !__GNUC__ */
+  return false;
+#endif /* __GNUC__ */
 } /* jerry_port_get_time_zone */
 
 /**
@@ -46,12 +52,16 @@ bool jerry_port_get_time_zone (jerry_time_zone_t *tz_p)
  */
 double jerry_port_get_current_time ()
 {
+#ifdef __GNUC__
   struct timeval tv;
 
   if (gettimeofday (&tv, NULL) != 0)
   {
-    return 0;
+    return 0.0;
   }
 
   return ((double) tv.tv_sec) * 1000.0 + ((double) tv.tv_usec) / 1000.0;
+#else /* __!GNUC__ */
+  return 0.0;
+#endif /* __GNUC__ */
 } /* jerry_port_get_current_time */