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

win32/build-tcc.bat

@@ -1,10 +1,11 @@
 @rem ------------------------------------------------------
-@rem batch file to build tcc using mingw gcc or tcc itself
+@rem batch file to build tcc using mingw, msvc or tcc itself
 @rem ------------------------------------------------------
 
 @echo off
 
-set CC=gcc -Os -s -fno-strict-aliasing
+set CC=gcc -Os -s
+
 set T=32
 if %PROCESSOR_ARCHITECTURE%_==AMD64_ set T=64
 if %PROCESSOR_ARCHITEW6432%_==AMD64_ set T=64
@@ -16,7 +17,7 @@ goto :a0
 :usage
 echo usage: build-tcc.bat [ options ... ]
 echo options:
-echo   -c prog              use prog (gcc or tcc) to compile tcc
+echo   -c prog              use prog (gcc/tcc/cl) to compile tcc
 echo   -c "prog options"    use prog with options to compile tcc
 echo   -t 32/64             force 32/64 bit default target
 echo   -v "version"         set tcc version
@@ -24,6 +25,21 @@ echo   -i dir               install tcc into dir
 echo   -d                   create tcc-doc.html too (needs makeinfo)
 exit /B 1
 
+:cl
+@echo off
+set CMD=cl
+:c0
+set ARG=%1
+set ARG=%ARG:.dll=.lib%
+if (%1)==(-shared) set ARG=-LD
+if (%1)==(-o) shift && set ARG=-Fe%2
+set CMD=%CMD% %ARG%
+shift
+if not (%1)==() goto :c0
+echo on
+%CMD% -O1 -W2 -Zi -MT -GS- -nologo -link -opt:ref,icf
+@exit /B %ERRORLEVEL%
+
 :a2
 shift
 :a1
@@ -31,6 +47,7 @@ shift
 :a0
 if not (%1)==(-c) goto :a3
 set CC=%~2
+if (%2)==(cl) set CC=@call :cl
 goto :a2
 :a3
 if not (%1)==(-t) goto :a4