Add NetBSD path for Debugging Information in Separate Files
Summary:
NetBSD stores debug information files in the `/usr/libdata/debug` path.
This change fixes debugging distribution executables, e.g. `look`(1):
```
$ lldb /usr/bin/look
(lldb) target create "/usr/bin/look"
Current executable set to '/usr/bin/look' (x86_64).
(lldb) b main
Breakpoint 1: where = look`main + 22 at look.c:107, address = 0x0000000000000da6
(lldb) r
Process 23473 launched: '/usr/bin/look' (x86_64)
Process 23473 stopped
* thread #1, stop reason = breakpoint 1.1
frame #0: 0x0000000186600da6 look`main(argc=1, argv=0x00007f7fffc7c488) at look.c:107
104
105 string = NULL;
106 file = _PATH_WORDS;
-> 107 termchar = '\0';
108 while ((ch = getopt(argc, argv, "dft:")) != -1)
109 switch(ch) {
110 case 'd':
(lldb)
```
There is no `/usr/lib/debug` path on NeBSD, so remove it from search.
Sponsored by <The NetBSD Foundation>
Reviewers: jingham, emaste, kettenis, labath, joerg
Reviewed By: labath
Subscribers: aprantl, #lldb
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D31461
llvm-svn: 299023