syscalls testsuite: use different escape sequence

The syscall testsuite uses embedded "// TEXT" markers in the .c files
to designate expected output, kind of like the "dg-" bunch in the gcc
test suite.  Unfortunately, "//" is not a unique prefix to systemtap
tests, and in particular it can occur in the system headers that will
be picked up with the "gcc -E -C ..." invocation in test.tcl.

So let's switch to "//staptest//".  test.tcl is also modified to
escape a few more mischevious regexp metacharacters that might sneak
past.

1 files changed, 2 insertions, 2 deletions

diff --git a/testsuite/systemtap.syscall/forkwait.c b/testsuite/systemtap.syscall/forkwait.c
index bf7516f6..b7df4923 100644
--- a/testsuite/systemtap.syscall/forkwait.c
+++ b/testsuite/systemtap.syscall/forkwait.c
@@ -12,14 +12,14 @@ int main ()
 	int status;
 	
 	child = fork();
-	// fork () = NNNN
+	//staptest// fork () = NNNN
 	if (!child) {
 		int i = 0xfffff;
 		while (i > 0) i--;
 		exit(0);
 	}
 	wait4(child, &status, WNOHANG, NULL);
-	// wait4 (NNNN, XXXX, WNOHANG, XXXX) = NNNN
+	//staptest// wait4 (NNNN, XXXX, WNOHANG, XXXX) = NNNN
 
 	return 0;
 }