gdb/

Support DW_TAG_module as separate namespaces.
	* dwarf2read.c (typename_concat): New parameter physname.
	(read_module_type): New function and declaration.
	(scan_partial_symbols): Scan also DW_TAG_module children.
	(partial_die_parent_scope): Accept scope even from DW_TAG_module. Pass
	to typename_concat backward compatible physname value 0.
	(partial_die_full_name, read_namespace_type): Pass to typename_concat
	backward compatible physname value 0.
	(add_partial_module, read_module): Remove FIXME comment.
	(process_die) <DW_TAG_module>: Set PROCESSING_HAS_NAMESPACE_INFO.
	(die_needs_namespace) <DW_TAG_variable>: Allow returning true even for
	DIEs under DW_TAG_module.
	(dwarf2_compute_name): Move the ada block for DW_AT_linkage_name and
	DW_AT_MIPS_linkage_name first, extend it for language_fortran
	&& physname and return there instead of just setting NAME.  Extend
	the main block for language_fortran.  Pass physname parameter to the
	typename_concat call.
	(read_import_statement, read_func_scope, get_scope_pc_bounds)
	(load_partial_dies, determine_prefix): Support also DW_TAG_module.
	(new_symbol): Fill in cplus_specific.demangled_name if it is still
	missing from SYMBOL_SET_NAMES in the language_fortran case.
	(new_symbol) <DW_TAG_variable>: Force LOC_UNRESOLVED for gfortran module
	variables.
	(read_type_die) <DW_TAG_module>: New.
	(MAX_SEP_LEN): Increase to 7.
	(typename_concat): New parameter physname.  New variable lead.  Support
	also language_fortran.
	* f-exp.y (yylex): Consider : also as a symbol name character class.
	* f-lang.c: Include cp-support.h.
	(f_word_break_characters, f_make_symbol_completion_list): New functions.
	(f_language_defn): Use cp_lookup_symbol_nonlocal,
	f_word_break_characters and f_make_symbol_completion_list.
	* f-typeprint.c (f_type_print_base) <TYPE_CODE_MODULE>: New.
	* gdbtypes.h (enum type_code) <TYPE_CODE_MODULE>: New.
	* symtab.c (symbol_init_language_specific): Support language_fortran.
	(symbol_find_demangled_name): New comment on language_fortran.
	(symbol_natural_name, symbol_demangled_name): Use demangled_name even
	for language_fortran.
	(lookup_symbol_aux_local): Check imports also for language_fortran.
	(default_make_symbol_completion_list): Rename to ...
	(default_make_symbol_completion_list_break_on): ... this name.  New
	parameter break_on, use it.
	(default_make_symbol_completion_list): New stub.
	* symtab.h (default_make_symbol_completion_list_break_on): New
	prototype.

gdb/testsuite/
	Support DW_TAG_module as separate namespaces.
	* gdb.fortran/library-module.exp, gdb.fortran/library-module-main.f90,
	gdb.fortran/library-module-lib.f90: New.
	* gdb.fortran/module.exp: Replace startup by a prepare_for_testing call.
	(print i): Remove.
	(continue to breakpoint: i-is-1, print var_i value 1)
	(continue to breakpoint: i-is-2, print var_i value 2)
	(continue to breakpoint: a-b-c-d, print var_a, print var_b, print var_c)
	(print var_d, print var_i value 14, ptype modmany, complete `modm)
	(complete `modmany, complete `modmany`, complete `modmany`var)
	(show language, setting breakpoint at module): New tests.
	* gdb.fortran/module.f90 (module mod): Remove.
	(module mod1, module mod2, module modmany, subroutine sub1)
	(subroutine sub2, program module): New.

gdb/f-lang.c

@@ -31,6 +31,7 @@
 #include "f-lang.h"
 #include "valprint.h"
 #include "value.h"
+#include "cp-support.h"
 
 
 /* Following is dubious stuff that had been in the xcoff reader. */
@@ -308,6 +309,38 @@ f_language_arch_info (struct gdbarch *gdbarch,
   lai->bool_type_default = builtin->builtin_logical_s2;
 }
 
+/* Remove the modules separator :: from the default break list.  */
+
+static char *
+f_word_break_characters (void)
+{
+  static char *retval;
+
+  if (!retval)
+    {
+      char *s;
+
+      retval = xstrdup (default_word_break_characters ());
+      s = strchr (retval, ':');
+      if (s)
+	{
+	  char *last_char = &s[strlen (s) - 1];
+
+	  *s = *last_char;
+	  *last_char = 0;
+	}
+    }
+  return retval;
+}
+
+/* Consider the modules separator :: as a valid symbol name character class.  */
+
+static char **
+f_make_symbol_completion_list (char *text, char *word)
+{
+  return default_make_symbol_completion_list_break_on (text, word, ":");
+}
+
 /* This is declared in c-lang.h but it is silly to import that file for what
    is already just a hack. */
 extern int c_value_print (struct value *, struct ui_file *,
@@ -335,15 +368,15 @@ const struct language_defn f_language_defn =
   c_value_print,		/* FIXME */
   NULL,				/* Language specific skip_trampoline */
   NULL,                    	/* name_of_this */
-  basic_lookup_symbol_nonlocal,	/* lookup_symbol_nonlocal */
+  cp_lookup_symbol_nonlocal,	/* lookup_symbol_nonlocal */
   basic_lookup_transparent_type,/* lookup_transparent_type */
   NULL,				/* Language specific symbol demangler */
   NULL,				/* Language specific class_name_from_physname */
   f_op_print_tab,		/* expression operators for printing */
   0,				/* arrays are first-class (not c-style) */
   1,				/* String lower bound */
-  default_word_break_characters,
-  default_make_symbol_completion_list,
+  f_word_break_characters,
+  f_make_symbol_completion_list,
   f_language_arch_info,
   default_print_array_index,
   default_pass_by_reference,