gdb: Rename language_defn::demangle

GDB already has a global symbol `demangle` (a boolean), having a
language method called `demangle` is not a good idea as we often want
to reference `demangle` the control variable inside `demangle` the
member function.

This commit renames `demangle` the member function to
`demangle_symbol`.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language::demangle): Rename to...
	(ada_language::demangle_symbol): ...this.
	* c-lang.c (cplus_language::demangle): Rename to...
	(cplus_language::demangle_symbol): ...this.
	* d-lang.c (d_language::demangle): Rename to...
	(d_language::demangle_symbol): ...this.
	* f-lang.c (f_language::demangle): Rename to...
	(f_language::demangle_symbol): ...this.
	* go-lang.c (go_language::demangle): Rename to...
	(go_language::demangle_symbol): ...this.
	* language.c (language_demangle): Update call to demangle_symbol.
	(auto_or_unknown_language::demangle): Rename to...
	(auto_or_unknown_language::demangle_symbol): ...this.
	* language.h (language_defn::demangle): Rename to...
	(language_defn::demangle_symbol): ...this.
	* objc-lang.c (objc_language::demangle): Rename to...
	(objc_language::demangle_symbol): ...this.
	* rust-lang.c (rust_language::demangle): Rename to...
	(rust_language::demangle_symbol): ...this.

1 files changed, 2 insertions, 2 deletions

diff --git a/gdb/language.c b/gdb/language.c
index 4053cb7..fe09378 100644
--- a/gdb/language.c
+++ b/gdb/language.c
@@ -589,7 +589,7 @@ language_demangle (const struct language_defn *current_language,
 				const char *mangled, int options)
 {
   if (current_language != NULL)
-    return current_language->demangle (mangled, options);
+    return current_language->demangle_symbol (mangled, options);
   return NULL;
 }
 
@@ -815,7 +815,7 @@ public:
 
   /* See language.h.  */
 
-  char *demangle (const char *mangled, int options) const override
+  char *demangle_symbol (const char *mangled, int options) const override
   {
     /* The auto language just uses the C++ demangler.  */
     return gdb_demangle (mangled, options);