make it MINGW compilable

[asergunov]

I think that those functions useless, but for binary compability you should keep it. So let it be implemented on pure c++.

[lalinsky]

This should be fixed in b63508e by adding the missing includes that I incorrectly removed when merging the abstract-io branch. We are not using iostreams anywhere else in TagLib except for the debug function and I'd rather not start using it.

[asergunov]

c:\qt\qtcreator-2.2.0\mingw\bin../lib/gcc/mingw32/4.4.0/include/c++/mingw32/bits/os_defines.h:46:1: warning: this is the locati on of the previous definition
In file included from c:\qt\qtcreator-2.2.0\mingw\bin../lib/gcc/mingw32/4.4.0/../../../../include/windows.h:48,
from C:\Users\tosha\Projects\taglib\bindings\c....\taglib\toolkit/taglib.h:52,
from C:\Users\tosha\Projects\taglib\bindings\c....\taglib\toolkit/tfile.h:30,
from C:\Users\tosha\Projects\taglib\bindings\c....\taglib/fileref.h:29,
from C:\Users\tosha\Projects\taglib\bindings\c\tag_c.cpp:29:
c:\qt\qtcreator-2.2.0\mingw\bin../lib/gcc/mingw32/4.4.0/../../../../include/windef.h:234: error: multiple types in one declaration
c:\qt\qtcreator-2.2.0\mingw\bin../lib/gcc/mingw32/4.4.0/../../../../include/windef.h:234: error: declaration does not declare a
nything
mingw32-make[2]: *** [bindings/c/CMakeFiles/tag_c.dir/tag_c.cpp.obj] Error 1
mingw32-make[1]: *** [bindings/c/CMakeFiles/tag_c.dir/all] Error 2
mingw32-make: *** [all] Error 2

[lalinsky]

Ok, I'll have a look at it.