Rollup merge of #101598 - chriswailes:sanitizers, r=nagisa,eholk

Update rustc's information on Android's sanitizers

This patch updates sanitizer support definitions for Android inside the compiler.  It also adjusts the logic to make sure no pre-built sanitizer runtime libraries are emitted as these are instead provided dynamically on Android targets.

compiler/rustc_target/src/spec/mod.rs

@@ -1381,6 +1381,8 @@ pub struct TargetOptions {
     pub is_like_msvc: bool,
     /// Whether a target toolchain is like WASM.
     pub is_like_wasm: bool,
+    /// Whether a target toolchain is like Android, implying a Linux kernel and a Bionic libc
+    pub is_like_android: bool,
     /// Default supported version of DWARF on this platform.
     /// Useful because some platforms (osx, bsd) only want up to DWARF2.
     pub default_dwarf_version: u32,
@@ -1673,6 +1675,7 @@ impl Default for TargetOptions {
             is_like_windows: false,
             is_like_msvc: false,
             is_like_wasm: false,
+            is_like_android: false,
             default_dwarf_version: 4,
             allows_weak_linkage: true,
             has_rpath: false,
@@ -2320,6 +2323,7 @@ impl Target {
         key!(is_like_windows, bool);
         key!(is_like_msvc, bool);
         key!(is_like_wasm, bool);
+        key!(is_like_android, bool);
         key!(default_dwarf_version, u32);
         key!(allows_weak_linkage, bool);
         key!(has_rpath, bool);
@@ -2570,6 +2574,7 @@ impl ToJson for Target {
         target_option_val!(is_like_windows);
         target_option_val!(is_like_msvc);
         target_option_val!(is_like_wasm);
+        target_option_val!(is_like_android);
         target_option_val!(default_dwarf_version);
         target_option_val!(allows_weak_linkage);
         target_option_val!(has_rpath);