stdlib: install SwiftGlibc.h in static resources directory

When SwiftGlibc.h was added in #32404, no cmake code was added to copy it to the
static resources.  Copy it along with glibc.modulemap, which references it.

Author: mhjacobson

stdlib/public/Platform/CMakeLists.txt

@@ -146,28 +146,35 @@ foreach(sdk ${SWIFT_SDKS})
 
     list(APPEND glibc_modulemap_target_list ${glibc_modulemap_target})
 
+    set(glibc_header_out "${module_dir}/SwiftGlibc.h")
+    set(glibc_header_out_static "${module_dir_static}/SwiftGlibc.h")
+    handle_gyb_source_single(glibc_header_target
+        SOURCE "SwiftGlibc.h.gyb"
+        OUTPUT "${glibc_header_out}"
+        FLAGS "-DCMAKE_SDK=${sdk}")
+    list(APPEND glibc_modulemap_target_list ${glibc_header_target})
+
     if(SWIFT_BUILD_STATIC_STDLIB)
       add_custom_command_target(
-        copy_glibc_modulemap_static
+        copy_glibc_modulemap_header_static
         COMMAND
           "${CMAKE_COMMAND}" "-E" "make_directory" ${module_dir_static}
         COMMAND
-          "${CMAKE_COMMAND}" "-E" "copy" ${glibc_modulemap_out} ${glibc_modulemap_out_static}
-        OUTPUT ${glibc_modulemap_out_static}
+          "${CMAKE_COMMAND}" "-E" "copy"
+            ${glibc_modulemap_out} ${glibc_modulemap_out_static}
+        COMMAND
+          "${CMAKE_COMMAND}" "-E" "copy"
+            ${glibc_header_out} ${glibc_header_out_static}
+        OUTPUT ${glibc_modulemap_out_static} ${glibc_header_out_static}
         DEPENDS
           "${glibc_modulemap_target}"
-        COMMENT "Copying Glibc modulemap to static resources")
+          "${glibc_header_target}"
+        COMMENT "Copying Glibc modulemap and header to static resources")
 
-      list(APPEND glibc_modulemap_target_list ${copy_glibc_modulemap_static})
+      list(APPEND glibc_modulemap_target_list
+        ${copy_glibc_modulemap_header_static})
     endif()
 
-    set(glibc_header_out "${module_dir}/SwiftGlibc.h")
-    handle_gyb_source_single(glibc_header_target
-        SOURCE "SwiftGlibc.h.gyb"
-        OUTPUT "${glibc_header_out}"
-        FLAGS "-DCMAKE_SDK=${sdk}")
-    list(APPEND glibc_modulemap_target_list ${glibc_header_target})
-
     # If this SDK is a target for a non-native host, except if it's for Android
     # with its own native sysroot, create a native modulemap without a sysroot
     # prefix. This is the one we'll install instead.