Remove const from many struct objfile *

I am just not sure if we should go the route of
        struct objfile * -> const struct objfile *
or the other way of:
        const struct objfile * -> struct objfile *

Normally const adding is better but here I do not see much useful to have any
struct objfile * const and then it just causes pointer compatibility problems.

On Wed, 03 Dec 2014 18:18:44 +0100, Doug Evans wrote:
struct objfile is one case where I've decided to just leave the const
out and not worry about it.

gdb/ChangeLog
2014-12-05  Jan Kratochvil  <jan.kratochvil@redhat.com>

	Remove const from struct objfile *.
	* solib-darwin.c, solib-spu.c, solib-svr4.c, solib.c, solist.h,
	symtab.c, symtab.h: In these files.

gdb/ChangeLog

@@ -1,3 +1,9 @@
+2014-12-05  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+	Remove const from struct objfile *.
+	* solib-darwin.c, solib-spu.c, solib-svr4.c, solib.c, solist.h,
+	symtab.c, symtab.h: In these files.
+
 2014-12-05  Andreas From  <andreas.from@ericsson.com>
 
 	* MAINTAINERS (Write After Approval): Add "Andreas From"

gdb/solib-darwin.c

@@ -570,7 +570,7 @@ darwin_relocate_section_addresses (struct so_list *so,
 }
 
 static struct symbol *
-darwin_lookup_lib_symbol (const struct objfile *objfile,
+darwin_lookup_lib_symbol (struct objfile *objfile,
 			  const char *name,
 			  const domain_enum domain)
 {

gdb/solib-spu.c

@@ -389,7 +389,7 @@ spu_bfd_open (char *pathname)
 
 /* Lookup global symbol in a SPE executable.  */
 static struct symbol *
-spu_lookup_lib_symbol (const struct objfile *objfile,
+spu_lookup_lib_symbol (struct objfile *objfile,
 		       const char *name,
 		       const domain_enum domain)
 {

gdb/solib-svr4.c

@@ -3195,7 +3195,7 @@ struct target_so_ops svr4_so_ops;
    the main executable.  */
 
 static struct symbol *
-elf_lookup_lib_symbol (const struct objfile *objfile,
+elf_lookup_lib_symbol (struct objfile *objfile,
 		       const char *name,
 		       const domain_enum domain)
 {

gdb/solib.c

@@ -1404,7 +1404,7 @@ show_auto_solib_add (struct ui_file *file, int from_tty,
    the library-specific handler if it is installed for the current target.  */
 
 struct symbol *
-solib_global_lookup (const struct objfile *objfile,
+solib_global_lookup (struct objfile *objfile,
 		     const char *name,
 		     const domain_enum domain)
 {

gdb/solist.h

@@ -137,7 +137,7 @@ struct target_so_ops
         unsigned o_flags, char **temp_pathname);
 
     /* Hook for looking up global symbols in a library-specific way.  */
-    struct symbol * (*lookup_lib_global_symbol) (const struct objfile *objfile,
+    struct symbol * (*lookup_lib_global_symbol) (struct objfile *objfile,
 						 const char *name,
 						 const domain_enum domain);
 
@@ -189,7 +189,7 @@ extern bfd *solib_bfd_open (char *in_pathname);
 extern struct target_so_ops *current_target_so_ops;
 
 /* Handler for library-specific global symbol lookup in solib.c.  */
-struct symbol *solib_global_lookup (const struct objfile *objfile,
+struct symbol *solib_global_lookup (struct objfile *objfile,
 				    const char *name,
 				    const domain_enum domain);
 

gdb/symtab.c

@@ -1536,11 +1536,11 @@ lookup_symbol_in_block (const char *name, const struct block *block,
 /* See symtab.h.  */
 
 struct symbol *
-lookup_global_symbol_from_objfile (const struct objfile *main_objfile,
+lookup_global_symbol_from_objfile (struct objfile *main_objfile,
 				   const char *name,
 				   const domain_enum domain)
 {
-  const struct objfile *objfile;
+  struct objfile *objfile;
 
   for (objfile = main_objfile;
        objfile;
@@ -1561,12 +1561,11 @@ lookup_global_symbol_from_objfile (const struct objfile *main_objfile,
 	  if (sym)
 	    {
 	      block_found = block;
-	      return fixup_symbol_section (sym, (struct objfile *)objfile);
+	      return fixup_symbol_section (sym, objfile);
 	    }
 	}
 
-      sym = lookup_symbol_via_quick_fns ((struct objfile *) objfile,
-					 GLOBAL_BLOCK, name, domain);
+      sym = lookup_symbol_via_quick_fns (objfile, GLOBAL_BLOCK, name, domain);
       if (sym)
 	return sym;
     }

gdb/symtab.h

@@ -1475,7 +1475,7 @@ extern enum language main_language (void);
    if necessary.  */
 
 extern struct symbol *
-  lookup_global_symbol_from_objfile (const struct objfile *main_objfile,
+  lookup_global_symbol_from_objfile (struct objfile *main_objfile,
 				     const char *name,
 				     const domain_enum domain);