FileAnalysis: add binary input reader and BIFs for sending in data.

This allows the input framework to feed files in to Bro for analysis.

scripts/base/frameworks/file-analysis/main.bro

@@ -51,8 +51,10 @@ export {
 		## from a container file as part of the analysis.
 		parent_file_id: string &log &optional;
 
-		## The network protocol over which the file was transferred.
-		protocol: string &log &optional;
+		## An identification of the source of the file data.  E.g. it may be
+		## a network protocol over which it was transferred, or a local file
+		## path which was read, or some other input source.
+		source: string &log &optional;
 
 		## The set of connections over which the file was transferred,
 		## indicated by UID strings.

scripts/base/frameworks/input/__load__.bro

@@ -2,4 +2,5 @@
 @load ./readers/ascii
 @load ./readers/raw
 @load ./readers/benchmark
+@load ./readers/binary
 

scripts/base/frameworks/input/readers/binary.bro

@@ -0,0 +1,8 @@
+##! Interface for the binary input reader.
+
+module InputBinary;
+
+export {
+	## Size of data chunks to read from the input file at a time.
+	const chunk_size = 1024 &redef;
+}