Clarify "watchpoint set" help text.

rdar://problem/11327790


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@155694 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Commands/CommandObjectWatchpoint.cpp b/source/Commands/CommandObjectWatchpoint.cpp
index ce6b71e..8387cb6 100644
--- a/source/Commands/CommandObjectWatchpoint.cpp
+++ b/source/Commands/CommandObjectWatchpoint.cpp
@@ -885,7 +885,9 @@
                    "If no '-w' option is specified, it defaults to read_write. "
                    "If no '-x' option is specified, it defaults to the variable's "
                    "byte size. "
-                   "Note that hardware resources for watching are often limited.",
+                   "Note that there are limited hardware resources for watchpoints. "
+                   "If watchpoint setting fails, consider disable/delete existing ones "
+                   "to free up resources.",
                    NULL,
                    eFlagProcessMustBeLaunched | eFlagProcessMustBePaused),
     m_option_group (interpreter),
@@ -1036,7 +1038,9 @@
                    "If no '-w' option is specified, it defaults to read_write. "
                    "If no '-x' option is specified, it defaults to the target's "
                    "pointer byte size. "
-                   "Note that hardware resources for watching are often limited.",
+                   "Note that there are limited hardware resources for watchpoints. "
+                   "If watchpoint setting fails, consider disable/delete existing ones "
+                   "to free up resources.",
                    NULL,
                    eFlagProcessMustBeLaunched | eFlagProcessMustBePaused),
     m_option_group (interpreter),