stdlib: permit builtin Collections and Unicode tests everywhere

The pthread dependency has been lifted through the Windows port
generalising the SwiftThreadExtras.  Enable building these unit test
binaries which are needed for the validation test suite.

Author: compnerd

stdlib/private/StdlibCollectionUnittest/CMakeLists.txt

@@ -1,7 +1,5 @@
 set(swift_stdlib_unittest_compile_flags)
 
-# TODO: support this on non-POSIX platforms.  It cannot be currently as it
-# depends on pthreads.
 add_swift_target_library(swiftStdlibCollectionUnittest ${SWIFT_STDLIB_LIBRARY_BUILD_TYPES} IS_STDLIB
   # This file should be listed the first.  Module name is inferred from the
   # filename.
@@ -24,8 +22,8 @@ add_swift_target_library(swiftStdlibCollectionUnittest ${SWIFT_STDLIB_LIBRARY_BU
   SWIFT_MODULE_DEPENDS_FREEBSD Glibc
   SWIFT_MODULE_DEPENDS_CYGWIN Glibc
   SWIFT_MODULE_DEPENDS_HAIKU Glibc
+  SWIFT_MODULE_DEPENDS_WINDOWS MSVCRT
   SWIFT_COMPILE_FLAGS ${swift_stdlib_unittest_compile_flags}
-  TARGET_SDKS ALL_POSIX_PLATFORMS
   INSTALL_IN_COMPONENT stdlib-experimental
   DARWIN_INSTALL_NAME_DIR "${SWIFT_DARWIN_STDLIB_PRIVATE_INSTALL_NAME_DIR}")
 

stdlib/private/StdlibUnicodeUnittest/CMakeLists.txt

@@ -1,7 +1,5 @@
 set(swift_stdlib_unittest_compile_flags)
 
-# TODO: support this on non-POSIX platforms.  It cannot be currently as it
-# depends on pthreads.
 add_swift_target_library(swiftStdlibUnicodeUnittest ${SWIFT_STDLIB_LIBRARY_BUILD_TYPES} IS_STDLIB
   # This file should be listed the first.  Module name is inferred from the
   # filename.
@@ -13,8 +11,8 @@ add_swift_target_library(swiftStdlibUnicodeUnittest ${SWIFT_STDLIB_LIBRARY_BUILD
   SWIFT_MODULE_DEPENDS_FREEBSD Glibc
   SWIFT_MODULE_DEPENDS_CYGWIN Glibc
   SWIFT_MODULE_DEPENDS_HAIKU Glibc
+  SWIFT_MODULE_DEPENDS_WINDOWS MSVCRT
   SWIFT_COMPILE_FLAGS ${swift_stdlib_unittest_compile_flags}
-  TARGET_SDKS ALL_POSIX_PLATFORMS
   INSTALL_IN_COMPONENT stdlib-experimental
   DARWIN_INSTALL_NAME_DIR "${SWIFT_DARWIN_STDLIB_PRIVATE_INSTALL_NAME_DIR}")