compile own ccache as the previous commit has a broken one

tools/msys/mingw32/lib/ccache/bin/clang

+#!/bin/bash
+
+ccache /mingw32/bin/clang "$@"

tools/msys/mingw32/lib/ccache/bin/clang++

+#!/bin/bash
+
+ccache /mingw32/bin/clang++ "$@"

tools/msys/mingw32/lib/ccache/bin/clang-cpp

+#!/bin/bash
+
+ccache /mingw32/bin/clang-cpp "$@"

tools/msys/mingw64/lib/ccache/bin/clang

+#!/bin/bash
+
+ccache /mingw64/bin/clang "$@"

tools/msys/mingw64/lib/ccache/bin/clang++

+#!/bin/bash
+
+ccache /mingw64/bin/clang++ "$@"

tools/msys/mingw64/lib/ccache/bin/clang-cpp

+#!/bin/bash
+
+ccache /mingw64/bin/clang-cpp "$@"