Add struct mg_queue and API, change examples/multi-threaded, add tests

examples/http-server/Makefile

@@ -1,17 +1,16 @@
-SOURCES = main.c ../../mongoose.c  # Source code files
-CFLAGS = -W -Wall -Wextra -g       # Build options
+SOURCES = main.c mongoose.c       # Source code files
+CFLAGS = -W -Wall -Wextra -g -I.  # Build options
 
 # Mongoose build options. See https://mongoose.ws/documentation/#build-options
-CFLAGS += -I ../..
-CFLAGS += -DMG_HTTP_DIRLIST_TIME=1 -DMG_ENABLE_SSI=1
-CFLAGS += -DMG_ENABLE_LINES=1 -DMG_ENABLE_IPV6=1
+CFLAGS_MONGOOSE += -DMG_HTTP_DIRLIST_TIME=1 -DMG_ENABLE_SSI=1
+CFLAGS_MONGOOSE += -DMG_ENABLE_LINES=1 -DMG_ENABLE_IPV6=1
 
 ifeq ($(OS),Windows_NT)
-  # Windows settings. Assume MinGW compiler
+  # Windows settings. Assume MinGW compiler. To use VC: make CC=cl CFLAGS=/MD
   PROG ?= example.exe           # Use .exe suffix for the binary
   CC = gcc                      # Use MinGW gcc compiler
   CFLAGS += -lws2_32            # Link against Winsock library
-  DELETE = cmd /C del /Q /F /S  # Command prompt command to delete files
+  DELETE = cmd /C del /q /f /s  # Command prompt command to delete files
 else
   # Mac, Linux
   PROG ?= example
@@ -22,7 +21,7 @@ all: $(PROG)
 	$(RUN) ./$(PROG) $(ARGS)
 
 $(PROG): $(SOURCES)
-	$(CC) $(SOURCES) $(CFLAGS) $(CFLAGS_EXTRA) -o $@
+	$(CC) $(SOURCES) $(CFLAGS) $(CFLAGS_MONGOOSE) $(CFLAGS_EXTRA) -o $@
 
 clean:
-	$(DELETE) $(PROG) *.o *.dSYM
+	$(DELETE) $(PROG) *.o *.obj *.exe *.dSYM

examples/http-server/mongoose.c

@@ -0,0 +1 @@
+../../mongoose.c

examples/http-server/mongoose.h

@@ -0,0 +1 @@
+../../mongoose.h