[RFA 2/5] New patches to support --enable-targets=all for mingw64

["Pierre Muller" <pierre.muller@ics-cnrs.unistra.fr>]

  I tried to compile GDB with
--enable-targets=all for x86_64-w64-mingw32 
target.
  As 'long' type is 4-byte while pointer type is 8-byte,
this target is quite sensitive to so 'dirty' code
lying around like casting 'long' or 'unsigned long' to pointers...

  I had to fix several sources to be able to 
successfully compile GDB with those configuration options.

2) Add intermediate typecast to uintptr_t to avoid
compilation warnings.
in alpha-mdebug-tdep.c

Note: this is a simple compilation failure fix,
I suspect that those kind of assignments might not work correctly
in not on a native configuration...

Pierre Muller
Pascal language support maintainer for GDB

2010-09-10  Pierre Muller  <muller@ics.u-strasbg.fr>

	* alpha-mdebug-tdep.c (find_proc_desc): Cast SYMBOL_VALUE result to
	uintptr_t before cast to pointer to avoid warning.

Index: src/gdb/alpha-mdebug-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/alpha-mdebug-tdep.c,v
retrieving revision 1.25
diff -u -p -r1.25 alpha-mdebug-tdep.c
--- src/gdb/alpha-mdebug-tdep.c	23 Apr 2010 15:14:22 -0000	1.25
+++ src/gdb/alpha-mdebug-tdep.c	9 Sep 2010 16:39:57 -0000
@@ -115,7 +115,7 @@ find_proc_desc (CORE_ADDR pc)
 
   if (sym)
     {
-      proc_desc = (struct mdebug_extra_func_info *) SYMBOL_VALUE (sym);
+      proc_desc = (struct mdebug_extra_func_info *) (uintptr_t) SYMBOL_VALUE (sym);
 
       /* Correct incorrect setjmp procedure descriptor from the library
          to make backtrace through setjmp work.  */