Remove various warnings, fix pppol2tp install

This fixes a collection of minor things that were resulting in
harmless warnings (accidental trigraphs, missing prototypes,
signed/unsigned char being used interchangeably) and corrects
an error in the pppol2tp makefile, which meant that it wasn't
installing anything.

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/chat/chat.c b/chat/chat.c
index dc6cf2e..0b88c27 100644
--- a/chat/chat.c
+++ b/chat/chat.c
@@ -1303,7 +1303,7 @@ register char *s;
 
     if (verbose) {
 	if (quiet)
-	    msgf("send (??????)");
+	    msgf("send (?????\?)");
 	else
 	    msgf("send (%v)", s);
     }