patch 7.4.1332
Problem:    Problem using Python3 when compiled with MingW.
Solution:   Define PYTHON3_HOME as a wide character string. (Yasuhiro
            Matsumoto)
diff --git a/src/Make_cyg_ming.mak b/src/Make_cyg_ming.mak
index 1c1ee8c..6a2b91f 100644
--- a/src/Make_cyg_ming.mak
+++ b/src/Make_cyg_ming.mak
@@ -264,7 +264,7 @@
 DYNAMIC_PYTHON3_DLL=python$(PYTHON3_VER).dll
 endif
 ifdef PYTHON3_HOME
-PYTHON3_HOME_DEF=-DPYTHON3_HOME=\"$(PYTHON3_HOME)\"
+PYTHON3_HOME_DEF=-DPYTHON3_HOME=L\"$(PYTHON3_HOME)\"
 endif
 
 ifeq (no,$(DYNAMIC_PYTHON3))