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, 1 insertions, 1 deletions

diff --git a/testsuite/systemtap.syscall/acct.c b/testsuite/systemtap.syscall/acct.c
index 927e40c9..47f87961 100644
--- a/testsuite/systemtap.syscall/acct.c
+++ b/testsuite/systemtap.syscall/acct.c
@@ -4,7 +4,7 @@
 int main()
 {
   acct("foobar");
-  // acct ("foobar") = -NNNN
+  //staptest// acct ("foobar") = -NNNN
 
   return 0;
 }