Merge GDB 7.5.1

gdb/testsuite/gdb.base/reread2.c

 /* pr 13484 */
 
 #include <stdio.h>
 
 int x;
 
 void foo()
 {
   x++;
   printf("This is foo\n");
 }
 
 int main()
 {
-#ifdef usestubs
-  set_debug_traps ();
-  breakpoint ();
-#endif
   foo();
   return 0;
 }
 
 /* Ensure the new file will have more sections.  It may exploit code not
    updating its SECTION_COUNT on reread_symbols.  */
 
 #ifndef NO_SECTIONS
 # define VAR0(n) __attribute__ ((section ("sect" #n))) int var##n;
 # define VAR1(n) VAR0 (n ## 0) VAR0(n ## 1) VAR0(n ## 2) VAR0(n ## 3)
 # define VAR2(n) VAR1 (n ## 0) VAR1(n ## 1) VAR1(n ## 2) VAR1(n ## 3)
 # define VAR3(n) VAR2 (n ## 0) VAR2(n ## 1) VAR2(n ## 2) VAR2(n ## 3)
 VAR3 (0)
 #endif