gdb: move pascal_language into p-lang.h

gdb: move pascal_language into p-lang.h

Move the pascal_language class declaration into the p-lang.h header
file.  This allows for the function implementations to be spread over
the different p-*.c files without the need for global trampoline
functions.

As a consequence of this change many of the Pascal value and type
printing helper functions have become member functions within the
pascal_language class.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* p-exp.y (exp): Update call to pascal_is_string_type.
	(pascal_parse): Rename to...
	(pascal_language::parser): ...this.
	* p-lang.c (is_pascal_string_type): Rename to...
	(pascal_is_string_type): ...this.
	(pascal_one_char): Rename to...
	(pascal_language::print_one_char): ...this.
	(pascal_printchar): Rename to...
	(pascal_language::printchar): ...this.  Update call to
	print_one_char member function.
	(pascal_op_print_tab): Rename to...
	(pascal_language::op_print_tab): ...this.
	(class pascal_language): Moved to p-lang.h.
	(pascal_language::language_arch_info): Function implementation
	moved out of class declaration.
	(pascal_language::printstr): Likewise.
	* p-lang.h (pascal_parse): Delete declaration.
	(pascal_is_string_type): Declare.
	(pascal_print_type): Delete declaration.
	(pascal_print_typedef): Delete declaration.
	(pascal_value_print_inner): Delete declaration.
	(pascal_value_print): Delete declaration.
	(pascal_type_print_method_args): Delete declaration.
	(is_pascal_string_type): Delete declaration.
	(pascal_printchar): Delete declaration.
	(pascal_builtin_types): Delete declaration.
	(pascal_type_print_base): Delete declaration.
	(pascal_type_print_varspec_prefix): Delete declaration.
	(class pascal_language): Moved here from p-lang.c.
	* p-typeprint.c (pascal_type_print_varspec_suffix): Delete
	declaration.
	(pascal_type_print_derivation_info): Delete declaration.
	(pascal_print_type): Rename to...
	(pascal_language::print_type): ...this.  Update calls to member
	functions.
	(pascal_print_typedef): Rename to...
	(pascal_language::print_typedef): ...this.  Update calls to member
	functions.
	(pascal_type_print_derivation_info): Rename to...
	(pascal_language::type_print_derivation_info): ...this.
	(pascal_type_print_method_args): Rename to...
	(pascal_language::type_print_method_args): ...this.
	(pascal_type_print_varspec_prefix): Rename to...
	(pascal_language::type_print_varspec_prefix): ...this.  Update
	calls to member functions.
	(pascal_print_func_args): Rename to...
	(pascal_language::print_func_args): ...this.  Update calls to
	member functions.
	(pascal_type_print_func_varspec_suffix): Rename to...
	(pascal_language::type_print_func_varspec_suffix): ...this.
	Update calls to member functions.
	(pascal_type_print_varspec_suffix): Rename to...
	(pascal_language::type_print_varspec_suffix): ...this.  Update
	calls to member functions.
	(pascal_type_print_base): Rename to...
	(pascal_language::type_print_base): ...this.  Update calls to
	member functions.
	* p-valprint.c (pascal_value_print_inner): Rename to...
	(pascal_language::value_print_inner): ...this.  Update calls to
	member functions.
	(pascal_value_print): Rename to...
	(pascal_language::value_print): ...this.  Update calls to member
	functions.