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, 5 insertions, 5 deletions

diff --git a/testsuite/systemtap.syscall/poll.c b/testsuite/systemtap.syscall/poll.c
index 591c1f74..3caa2b14 100644
--- a/testsuite/systemtap.syscall/poll.c
+++ b/testsuite/systemtap.syscall/poll.c
@@ -17,21 +17,21 @@ int main()
   sigaddset(&sigs,SIGUSR2);
 
   fd = epoll_create(32);
-  // epoll_create (32)
+  //staptest// epoll_create (32)
 
   epoll_ctl(fd, EPOLL_CTL_ADD, 13, &ev);
-  // epoll_ctl (NNNN, EPOLL_CTL_ADD, 13, XXXX)
+  //staptest// epoll_ctl (NNNN, EPOLL_CTL_ADD, 13, XXXX)
 
   epoll_wait(fd, &ev, 17,0);
-  // epoll_wait (NNNN, XXXX, 17, 0)
+  //staptest// epoll_wait (NNNN, XXXX, 17, 0)
   close(fd);
 
   poll(&pfd, 1, 0);
-  // poll (XXXX, 1, 0)
+  //staptest// poll (XXXX, 1, 0)
 
 #ifdef SYS_ppoll
   ppoll(&pfd, 1, &tim, &sigs);
-  //  ppoll (XXXX, 1, \[0.200000000\], XXXX, 8)
+  //staptest//  ppoll (XXXX, 1, \[0.200000000\], XXXX, 8)
 #endif
 
   return 0;