fix ninja quote issues, clean up

Author: bobzhang

jscomp/all.depend

@@ -657,10 +657,10 @@ bsb/bsb_default.cmx : ext/string_set.cmx ext/literals.cmx ext/ext_string.cmx \
 bsb/bsb_dep_infos.cmx : bsb/bsb_dep_infos.cmi
 bsb/bsb_dir.cmx : bsb/bsb_dir.cmi
 bsb/bsb_file.cmx : bsb/bsb_file.cmi
-bsb/bsb_gen.cmx : ext/string_map.cmx ext/literals.cmx ext/ext_filename.cmx \
-    bsb/bsb_ninja.cmx bsb/bsb_config.cmx bsb/bsb_build_util.cmx \
-    bsb/bsb_build_ui.cmx bsb/bsb_build_schemas.cmx common/binary_cache.cmx \
-    bsb/bsb_gen.cmi
+bsb/bsb_gen.cmx : ext/string_map.cmx ext/literals.cmx ext/ext_string.cmx \
+    ext/ext_filename.cmx bsb/bsb_ninja.cmx bsb/bsb_config.cmx \
+    bsb/bsb_build_util.cmx bsb/bsb_build_ui.cmx bsb/bsb_build_schemas.cmx \
+    common/binary_cache.cmx bsb/bsb_gen.cmi
 bsb/bsb_helper_main.cmx : depends/depends_post_process.cmx \
     bsb/bsb_helper_main.cmi
 bsb/bsb_main.cmx : ext/string_vec.cmx ext/string_set.cmx \
@@ -672,11 +672,11 @@ bsb/bsb_main.cmx : ext/string_vec.cmx ext/string_set.cmx \
     bsb/bsb_build_ui.cmx bsb/bsb_build_schemas.cmx bsb/bsb_main.cmi
 bsb/bsb_ninja.cmx : ext/string_set.cmx ext/string_map.cmx \
     ext/string_hash_set.cmx ext/literals.cmx ext/ext_sys.cmx \
-    ext/ext_filename.cmx bsb/bsb_config.cmx bsb/bsb_build_util.cmx \
-    bsb/bsb_build_ui.cmx bsb/bsb_build_schemas.cmx common/binary_cache.cmx \
-    bsb/bsb_ninja.cmi
+    ext/ext_string.cmx ext/ext_filename.cmx bsb/bsb_config.cmx \
+    bsb/bsb_build_util.cmx bsb/bsb_build_ui.cmx bsb/bsb_build_schemas.cmx \
+    common/binary_cache.cmx bsb/bsb_ninja.cmi
 bsb/bsb_os_dependent.cmx :
-bsb/bsb_unix.cmx : ext/ext_sys.cmx bsb/bsb_unix.cmi
+bsb/bsb_unix.cmx : ext/ext_sys.cmx ext/ext_string.cmx bsb/bsb_unix.cmi
 bsb/bsb_build_ui.cmi : ext/string_set.cmi ext/ext_json.cmi \
     ext/ext_file_pp.cmi common/binary_cache.cmi
 bsb/bsb_build_util.cmi : ext/ext_json.cmi