Mark local functions as static

This helps to catch unused functions like the former mosh_read_line,
allows the compiler to make better inlining decisions, and reduces the
binary size a bit.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

src/examples/parse.cc

@@ -63,9 +63,9 @@
 
 const size_t buf_size = 1024;
 
-void emulate_terminal( int fd );
-int copy( int src, int dest );
-int vt_parser( int fd, Parser::UTF8Parser *parser );
+static void emulate_terminal( int fd );
+static int copy( int src, int dest );
+static int vt_parser( int fd, Parser::UTF8Parser *parser );
 
 int main( int argc __attribute__((unused)),
 	  char *argv[] __attribute__((unused)),
@@ -135,7 +135,7 @@ int main( int argc __attribute__((unused)),
   return 0;
 }
 
-void emulate_terminal( int fd )
+static void emulate_terminal( int fd )
 {
   Parser::UTF8Parser parser;
 
@@ -166,7 +166,7 @@ void emulate_terminal( int fd )
   }
 }
 
-int copy( int src, int dest )
+static int copy( int src, int dest )
 {
   char buf[ buf_size ];
 
@@ -181,7 +181,7 @@ int copy( int src, int dest )
   return swrite( dest, buf, bytes_read );
 }
 
-int vt_parser( int fd, Parser::UTF8Parser *parser )
+static int vt_parser( int fd, Parser::UTF8Parser *parser )
 {
   char buf[ buf_size ];