Unicode support for the Windows runtime (#1200)

* Add support code

* Explicitly reference ANSI Windows APIs

* Adapt Sys.is_directory

* Adapt ocamlrun

* Add Changes entry

* Add testsuite

* Adapt Unix.open_process{_in,_out,_full,}, Unix.create_process{_env,}

* Adapt headernt.c

* Adapt Pervasives.open_{in,out}, Filename.temp_file, etc.

* Adapt Sys.file_exists

* Adapt Sys.remove

* Adapt Sys.chdir

* Adapt Sys.getcwd

* Adapt Sys.getenv

* Adapt Sys.command

* Adapt Sys.readdir

* Adapt CPLUGINS

* Remove use of FormatMessageA, CreateFileA

* Adapt Unix.mkdir

* Adapt Unix.openfile

* Adapt Unix.readlink

* Adapt Unix.rename

* Adapt Unix.{LargeFile,}.{l,}stat

* Adapt Unix.system

* Adapt Unix.{open,read}dir

* Adapt Unix.link

* Adapt Unix.symlink

* Adapt Unix.getcwd

* Adapt Unix.rmdir

* Adapt Unix.utimes

* Adapt Unix.unlink

* Adapt Unix.chdir

* Adapt Unix.chmod

* Adapt Unix.{execv,execve,execvp,execvpe}

* Compile with -DUNICODE -D_UNICODE under Windows

* Add configure-time switch, Config.windows_unicode

* Adapt Unix.putenv

* Re-implement Unix.environment using GetEnvironmentStrings()

* Use Unicode-aware flexdll

* Adapt Unix.environment

* AppVeyor: bootstrap flexdll

* Adapt tests/embedded/cmmain.c

* Adapt tests/lib-dynlink-csharp/entry.c

* Remove exec tests

* Fixup

* Pass -municode to MinGW compiler

* Try to fix tests/embedded

* Adapt Sys.rename

* Correct Changes entry

* Makefile.several: use $(O) and $(NATIVECODE_ONLY)

* Display => skipped correctly for tests/win-unicode

* Add missing casts to execv* calls

It's not clear why these aren't necessary for with char, but they are
necessary with wchar_t on GCC (but not MSVC).

* Missing header in systhreads (Win32 only)

* Revert "Pass -municode to MinGW compiler"

This reverts commit a4ce7fb319c429068a5b9d1ab14a2cc3969c355f.

* Revert "Try to fix tests/embedded"

This reverts commit 5197d8922295b7b339b970ec3189374aa15de4b8.

* Revert "Remove exec tests"

This reverts commit 306ccef2e79eca5b38ecfa285b912c7bcf3e9f52.

* Don't pass $(LDFLAGS) when build ocamlc.opt

It's already included via CC anyway, and it causes Unicode problems for
Winodws (because the linker options need to be prefixed "-link" to go via
flexlink).

* Use wmain on Windows for ocamlrun

* Build Unicode applications on Windows

* Use wmain in headernt.c

* Minor correction to win-unicode Makefile

* Switch submodule to FlexDLL 0.36

* Build ocamlyacc as an ANSI application

* Revert "Fixup"

This reverts commit 500bd6b575ffd6c5b71c6953e55d740f0b090185.

* Fix casts for execvp/execve

* Remove tabs from test code

* Fix Changes entry

* shell32.lib is no longer necessary

* Free allocated string

* Changes: signal breaking change

* Disable exec_tests

* Protect with CAML_INTERNALS

1 files changed, 1 insertions, 0 deletions

diff --git a/configure b/configure
index 9fe18076e1..6ed1783c11 100755
--- a/configure
+++ b/configure
@@ -2106,6 +2106,7 @@ if [ "$ostype" = Cygwin ]; then
 fi
 config FLAMBDA "$flambda"
 config SAFE_STRING "$safe_string"
+config WINDOWS_UNICODE "0"
 config AFL_INSTRUMENT "$afl_instrument"
 config MAX_TESTSUITE_DIR_RETRIES "$max_testsuite_dir_retries"
 config FLAT_FLOAT_ARRAY "$flat_float_array"