Use __func__ instead of __FUNCTION__

The __FUNCTION__ is not part of the C99/C++11 standard.
So replace all occurrences with the standard __func__.

Side note: GCC 5.1 warns when using -Wpedantic -std=c99
and __FUNCTION__.

JerryScript-DCO-1.0-Signed-off-by: Peter Gal pgal.u-szeged@partner.samsung.com

jerry-libc/jerry-libc-defs.h

@@ -39,11 +39,11 @@ libc_fatal (const char *msg,
 
 #ifndef LIBC_NDEBUG
 # define LIBC_ASSERT(x) do { if (__builtin_expect (!(x), 0)) { \
-     libc_fatal (#x, __FILE__, __FUNCTION__, __LINE__); } } while (0)
+     libc_fatal (#x, __FILE__, __func__, __LINE__); } } while (0)
 # define LIBC_UNREACHABLE() \
    do \
    { \
-     libc_fatal ("Code is unreachable", __FILE__, __FUNCTION__, __LINE__); \
+     libc_fatal ("Code is unreachable", __FILE__, __func__, __LINE__); \
    } while (0)
 #else /* !LIBC_NDEBUG */
 # define LIBC_ASSERT(x) do { if (false) { (void) (x); } } while (0)

jerry-libc/target/linux/jerry-libc-target.c

@@ -48,7 +48,7 @@ LIBC_UNREACHABLE_STUB_FOR (int raise (int sig_no __attr_unused___))
 #define LIBC_EXIT_ON_ERROR(syscall_ret_val) \
   if ((syscall_ret_val) < 0) \
 { \
-  libc_fatal ("Syscall", __FILE__, __FUNCTION__, __LINE__); \
+  libc_fatal ("Syscall", __FILE__, __func__, __LINE__); \
 }
 
 static long int syscall_0 (long int syscall_no);