Have debugserver send the OS version string plus
major, minor, and patchlevel in the qHostInfo reply.  
Document that qHostInfo may report major/minor/patch
separately / in addition to the version: combination.

<rdar://problem/22125465> 

llvm-svn: 244716
diff --git a/lldb/tools/debugserver/source/DNB.h b/lldb/tools/debugserver/source/DNB.h
index 1d29625..7b186d3 100644
--- a/lldb/tools/debugserver/source/DNB.h
+++ b/lldb/tools/debugserver/source/DNB.h
@@ -168,5 +168,6 @@
 //----------------------------------------------------------------------
 const char *    DNBStateAsString (nub_state_t state);
 nub_bool_t      DNBResolveExecutablePath (const char *path, char *resolved_path, size_t resolved_path_size);
+bool            DNBGetOSVersionNumbers (uint64_t *major, uint64_t *minor, uint64_t *patch);
 
 #endif