Update to current version of Go library.
Update testsuite for removed types.
* go-lang.c (go_langhook_init): Omit float_type_size when calling
go_create_gogo.
* go-c.h: Update declaration of go_create_gogo.
From-SVN: r169098
PR other/46789
PR bootstrap/46812
* go-lang.c (go_char_p): Define type and vectors.
(go_search_dirs): New static variable.
(go_langhook_handle_option): Use version and version/machine
directories for -L.
(go_langhook_post_options): Add non-specific -L paths.
* Make-lang.in (go/go-lang.o): Define DEFAULT_TARGET_VERSION and
DEFAULT_TARGET_MACHINE when compiling.
* gccgo.texi (Invoking gccgo): Only document -L for linking.
(Import and Export): Don't mention -L for finding import files.
libgo: Install .gox files in version and target specific directory.
From-SVN: r167537
gcc/:
* gcc.c (default_compilers): Add entry for ".go".
* common.opt: Add -static-libgo as a driver option.
* doc/install.texi (Configuration): Mention libgo as an option for
--enable-shared. Mention go as an option for --enable-languages.
* doc/invoke.texi (Overall Options): Mention .go as a file name
suffix. Mention go as a -x option.
* doc/frontends.texi (G++ and GCC): Mention Go as a supported
language.
* doc/sourcebuild.texi (Top Level): Mention libgo.
* doc/standards.texi (Standards): Add section on Go language.
Move references for other languages into their own section.
* doc/contrib.texi (Contributors): Mention that I contributed the
Go frontend.
gcc/testsuite/:
* lib/go.exp: New file.
* lib/go-dg.exp: New file.
* lib/go-torture.exp: New file.
* lib/target-supports.exp (check_compile): Match // Go.
From-SVN: r167407
