updates & cleanups (tcc-doc/Changelog/TODO ...)

- tcc-doc.texi: commandline option info update
- Changelog/TODO: update
- tests/tcctest.py: removed
- tests/Makefile: weaktest fixed
- tests/tests2: some files renamed and/or converted to unix LF
- configure/Makefile: --enable-static option (no dll on win32)
- win32/build-tcc.bat: msvc support
- win32/tcc-win32.txt: build info update
- win32/vs2015/: VS solution removed
- win32/include/tcc/tcc_libm.h: #include statement fixed
- tcc.c: -include <file> option help info
- .gitignore: cleanup

tests/tests2/86_memory-model.c

@@ -0,0 +1,38 @@
+#include <stdio.h>
+
+int
+main()
+{
+#if defined(__LLP64__)
+	if (sizeof(short) == 2
+	    && sizeof(int) == 4
+	    && sizeof(long int) == 4
+	    && sizeof(long long int) == 8
+	    && sizeof(void*) == 8) {
+		(void)printf("Ok\n");
+	} else {
+		(void)printf("KO __LLP64__\n");
+	}
+#elif defined(__LP64__)
+	if (sizeof(short) == 2
+	    && sizeof(int) == 4
+	    && sizeof(long int) == 8
+	    && sizeof(long long int) == 8
+	    && sizeof(void*) == 8) {
+		(void)printf("Ok\n");
+	} else {
+		(void)printf("KO __LP64__\n");
+	}
+#elif defined(__ILP32__)
+	if (sizeof(short) == 2
+	    && sizeof(int) == 4
+	    && sizeof(long int) == 4
+	    && sizeof(void*) == 4) {
+		(void)printf("Ok\n");
+	} else {
+		(void)printf("KO __ILP32__\n");
+	}
+#else
+	(void)printf("KO no __*LP*__ defined.\n");
+#endif
+}