Support other arguments with rsp file

[boolking]

Gyp's ninja generator will generate command lines like:
$cc /nologo /showIncludes /FC @$out.rsp /c a.cpp /Foa.obj /Fda.pdb

1. Cclash can only be used with one rsp file and without any other arguments;
2. The rsp file is not longer than 2147;
3. /nologo and /showIncludes is not supported by cclash.

I suggest cclash creating its own new rsp file to store all the arguments to fix these issues.

[Ian Norton]

My reading of the command line support for CL was that CL only permitted one response file but it sounds like I'm wrong. I'll consider adding this.