A correction for the commit: revert a grischka patch: gdb refused to know "main"

keep revert (check SHF_ALLOC) only for x86 target and keep a grishka patch for
other targets

tccelf.c

@@ -2317,7 +2317,14 @@ static int final_sections_reloc(TCCState *s1)
     /* XXX: ignore sections with allocated relocations ? */
     for(i = 1; i < s1->nb_sections; i++) {
         s = s1->sections[i];
+#ifdef TCC_TARGET_I386
         if (s->reloc && s != s1->got && (s->sh_flags & SHF_ALLOC)) //gr
+        /* On X86 gdb 7.3 works in any case but gdb 6.6 will crash if SHF_ALLOC
+        checking is removed */
+#else
+        if (s->reloc && s != s1->got)
+        /* On X86_64 gdb 7.3 will crash if SHF_ALLOC checking is present */
+#endif
             relocate_section(s1, s);
     }