Add magic file for identifying ccache files (#880)

Useful when working with streams from server.

diff --git a/misc/ccache.magic b/misc/ccache.magic
new file mode 100644 (file)
index 0000000..ea5a143
--- /dev/null
+++ b/misc/ccache.magic
@@ -0,0 +1,7 @@
+# ccache manifest
+0       string          cCmF            ccache manifest
+>4      ubyte           x               \b, version %d
+
+# ccache result
+0       string          cCrS            ccache result
+>4      ubyte           x               \b, version %d