core/erlc.mk: Quote application name in .app

core/erlc.mk

@@ -61,7 +61,7 @@ endif
 
 ifeq ($(wildcard src/$(PROJECT_MOD).erl),)
 define app_file
-{application, $(PROJECT), [
+{application, '$(PROJECT)', [
 	{description, "$(PROJECT_DESCRIPTION)"},
 	{vsn, "$(PROJECT_VERSION)"},$(if $(IS_DEP),
 	{id$(comma)$(space)"$(1)"}$(comma))
@@ -73,7 +73,7 @@ define app_file
 endef
 else
 define app_file
-{application, $(PROJECT), [
+{application, '$(PROJECT)', [
 	{description, "$(PROJECT_DESCRIPTION)"},
 	{vsn, "$(PROJECT_VERSION)"},$(if $(IS_DEP),
 	{id$(comma)$(space)"$(1)"}$(comma))