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

.gitignore

@@ -1,72 +1,64 @@
+*~
+\#*
+.#*
 *.o
 *.a
-a.out
 *.exe
+*.dll
+*.obj
+*.pdb
+*.lib
+*.exp
 *.log
+*.bz2
+*.zip
+.gdb_history
+a.out
 tcc_g
 tcc
-/*-tcc
-tc2.c
-doc
-tc3s.c
-p3.c
-tc1.c
-error.c
-i386-gen1.c
-test.out1
-test.out1b
-test.out2
-test.out2b
-test.out3
-test.out3b
-web.sh
-memdebug.c
-bench
-Makefile.uClibc
-boundtest
-prog.ref
-test.ref
-test.out
-tcc-doc.html
-ideas
-tcctest.ref
-linux.tcc
-ldtest
-libtcc_test
-instr.S
-p.c
-p2.c
-tcctest[1234]
-test[1234].out
-tests/tcclib.h
-tests/tcctest.cc
-tests/weaktest.*.o.txt
-tests/tests2/fred.txt
-tests/tests2/*.exe
-tests/hello
-tests/abitest-*cc
-tests/vla_test
-.gdb_history
-tcc.1
-tcc.pod
+*-tcc
+
 config.h
 config.mak
 config.texi
+conftest*
 tags
 TAGS
-.DS_Store
-*.swp
+tcc.1
+tcc.pod
+tcc-doc.html
+tcc-doc.info
+
 lib/x86_64
 lib/i386
 lib/x86_64-win32
 lib/i386-win32
 lib/arm
 lib/arm64
-tcc-doc.info
-conftest*
-tiny_libmaker
-*.dSYM
-*~
-\#*
-.#*
-win32/*
+
+win32/doc
+win32/libtcc
+win32/lib/32
+win32/lib/64
+win32/include/float.h
+win32/include/stdarg.h
+win32/include/stdbool.h
+win32/include/stddef.h
+win32/include/varargs.h
+win32/include/tcclib.h
+
+tests/test.out*
+tests/test*.out
+tests/tcctest[1234]
+tests/tcctest.gcc
+tests/*.ref
+tests/*.txt
+tests/*.gcc
+tests/*-cc*
+tests/*-tcc*
+tests/libtcc_test
+tests/vla_test
+tests/hello
+tests/tests2/fred.txt
+
+libtcc*.def