Add aliases for backtrace related options.

Using the long option names might not fit in the malloc debug option
property since properties have a 92 character limit.

This patch creates new aliases for the original options.

Bug: 264504531
Test: set new options pass
Test: Config unit tests pass.
Change-Id: Id985720f36a2bf0da7b35ff444c2c80eb1fb4363
diff --git a/libc/malloc_debug/Config.cpp b/libc/malloc_debug/Config.cpp
index 6a81277..be577bc 100644
--- a/libc/malloc_debug/Config.cpp
+++ b/libc/malloc_debug/Config.cpp
@@ -87,35 +87,65 @@
         {BACKTRACE_SPECIFIC_SIZES, &Config::SetBacktraceSize},
     },
     {
+        "bt_sz",
+        {BACKTRACE_SPECIFIC_SIZES, &Config::SetBacktraceSize},
+    },
+    {
         "backtrace_min_size",
         {BACKTRACE_SPECIFIC_SIZES, &Config::SetBacktraceMinSize},
     },
     {
+        "bt_min_sz",
+        {BACKTRACE_SPECIFIC_SIZES, &Config::SetBacktraceMinSize},
+    },
+    {
         "backtrace_max_size",
         {BACKTRACE_SPECIFIC_SIZES, &Config::SetBacktraceMaxSize},
     },
-
+    {
+        "bt_max_sz",
+        {BACKTRACE_SPECIFIC_SIZES, &Config::SetBacktraceMaxSize},
+    },
     {
         "backtrace",
         {BACKTRACE | TRACK_ALLOCS, &Config::SetBacktrace},
     },
     {
+        "bt",
+        {BACKTRACE | TRACK_ALLOCS, &Config::SetBacktrace},
+    },
+    {
         "backtrace_enable_on_signal",
         {BACKTRACE | TRACK_ALLOCS, &Config::SetBacktraceEnableOnSignal},
     },
-
+    {
+        "bt_en_on_sig",
+        {BACKTRACE | TRACK_ALLOCS, &Config::SetBacktraceEnableOnSignal},
+    },
     {
         "backtrace_dump_on_exit",
         {0, &Config::SetBacktraceDumpOnExit},
     },
     {
+        "bt_dmp_on_ex",
+        {0, &Config::SetBacktraceDumpOnExit},
+    },
+    {
         "backtrace_dump_prefix",
         {0, &Config::SetBacktraceDumpPrefix},
     },
     {
+        "bt_dmp_pre",
+        {0, &Config::SetBacktraceDumpPrefix},
+    },
+    {
         "backtrace_full",
         {BACKTRACE_FULL, &Config::VerifyValueEmpty},
     },
+    {
+        "bt_full",
+        {BACKTRACE_FULL, &Config::VerifyValueEmpty},
+    },
 
     {
         "fill",