Use correct PATH to find macOS Python

When configuring the iOS/watchOS/tvOS Python, the PATH is prepended
such that the (host) macOS Python x86_64 binary can be found. But the
`$(PROJECT_DIR)/build/macOS/python/bin` is not there yet. It is created
only later in the target
`dist/Python-$(PYTHON_VER)-$1-support.b$(BUILD_NUMBER).tar.gz`.

Until then, the macOS Python is only available in the
`$(PROJECT_DIR)/$(PYTHON_DIR-macOS)/dist/` dir. Therefore, this is the
correct dir to be used in the PATH var.

Author: samueljohn

Makefile

@@ -286,7 +286,7 @@ ifeq ($2,macOS)
 		--without-doc-strings --enable-ipv6 --without-ensurepip \
 		$$(PYTHON_CONFIGURE-$2)
 else
-	cd $$(PYTHON_DIR-$1) && PATH=$(PROJECT_DIR)/build/macOS/python/bin:$(PATH) ./configure \
+	cd $$(PYTHON_DIR-$1) && PATH=$(PROJECT_DIR)/$(PYTHON_DIR-macOS)/dist/bin:$(PATH) ./configure \
 		CC="$$(CC-$1)" LD="$$(CC-$1)" \
 		--host=$$(MACHINE_DETAILED-$1)-apple-$(shell echo $2 | tr '[:upper:]' '[:lower:]') \
 		--build=x86_64-apple-darwin$(shell uname -r) \