feat: add multi-arch CI matrix with nan-tagging toggle and 32-bit test suite

Add Travis CI configuration to build and test Wren on both Linux and macOS, for both 32-bit and 64-bit architectures, with and without WREN_NAN_TAGGING defined. Introduce `ci_32` and `ci_64` make targets that build debug/release and C/C++ variants, then run the test suite against each binary using a suffix parameter. Update `util/test.py` with argparse to accept `--suffix` and `suite` arguments, increase test timeout from 2 to 5 seconds, and fix handle leak in `test/api/slots.c` by moving `wrenReleaseHandle` after the conditional block. Replace `fpclassify`/`signbit` checks for infinity/nan in `wrenNumToString` to avoid GCC overflow warnings on 32-bit, double-cast `double` to `uint32_t` in `num_bitwiseNot` to prevent undefined behavior, and relax floating-point comparisons in `test/core/number/sin.wren` and `cos.wren` to use absolute tolerance. Comment out hex literals larger than `0x1000000` in `example/syntax.wren` since they exceed 32-bit range, and bump libuv from v1.8.0 to v1.10.0 for 32-bit build fixes.

util/libuv.py

@@ -11,7 +11,7 @@ import shutil
 import subprocess
 import sys
 
-LIB_UV_VERSION = "v1.8.0"
+LIB_UV_VERSION = "v1.10.0"
 LIB_UV_DIR = "deps/libuv"
 
 def python2_binary():

util/test.py

@@ -2,6 +2,7 @@
 
 from __future__ import print_function
 
+from argparse import ArgumentParser
 from collections import defaultdict
 from os import listdir
 from os.path import abspath, basename, dirname, isdir, isfile, join, realpath, relpath, splitext
@@ -10,10 +11,22 @@ from subprocess import Popen, PIPE
 import sys
 from threading import Timer
 
+parser = ArgumentParser()
+parser.add_argument('--suffix', default='d')
+parser.add_argument('suite', nargs='?')
+
+args = parser.parse_args(sys.argv[1:])
+
+config=args.suffix.lstrip('d')
+is_debug=args.suffix.startswith('d')
+config_dir=("debug" if is_debug else "release") + config
 # Runs the tests.
 WREN_DIR = dirname(dirname(realpath(__file__)))
-WREN_APP = join(WREN_DIR, 'bin', 'wrend')
-TEST_APP = join(WREN_DIR, 'build', 'debug', 'test', 'wrend')
+WREN_APP = join(WREN_DIR, 'bin', 'wren' + args.suffix)
+TEST_APP = join(WREN_DIR, 'build', config_dir, 'test', 'wren' + args.suffix)
+
+print("WREN_APP=" + WREN_APP)
+print("TEST_APP=" + TEST_APP)
 
 EXPECT_PATTERN = re.compile(r'// expect: ?(.*)')
 EXPECT_ERROR_PATTERN = re.compile(r'// expect error(?! line)')
@@ -114,7 +127,7 @@ class Test:
     test_arg = self.path
     proc = Popen([app, test_arg], stdin=PIPE, stdout=PIPE, stderr=PIPE)
 
-    # If a test takes longer than two seconds, kill it.
+    # If a test takes longer than five seconds, kill it.
     #
     # This is mainly useful for running the tests while stress testing the GC,
     # which can make a few pathological tests much slower.
@@ -123,7 +136,7 @@ class Test:
       timed_out[0] = True
       p.kill()
 
-    timer = Timer(2, kill_process, [proc])
+    timer = Timer(5, kill_process, [proc])
 
     try:
       timer.start()
@@ -313,9 +326,9 @@ def run_script(app, path, type):
     return
 
   # Check if we are just running a subset of the tests.
-  if len(sys.argv) == 2:
+  if args.suite:
     this_test = relpath(path, join(WREN_DIR, 'test'))
-    if not this_test.startswith(sys.argv[1]):
+    if not this_test.startswith(args.suite):
       return
 
   # Update the status line.

util/wren.mk

@@ -42,6 +42,7 @@ ifeq ($(VERBOSE),1)
 	V :=
 endif
 
+C_OPTIONS := $(WREN_CFLAGS)
 C_WARNINGS := -Wall -Wextra -Werror -Wno-unused-parameter
 # Wren uses callbacks heavily, so -Wunused-parameter is too painful to enable.