ENH: java does not work under mingw

Source/CMakeLists.txt

@@ -877,7 +877,7 @@ IF(BUILD_TESTING)
     ENDIF(CMAKE_Fortran_COMPILER_FULLPATH)
 
     INCLUDE(FindJava)
-    IF(JAVA_COMPILE AND JAVA_RUNTIME AND JAVA_ARCHIVE)
+    IF(JAVA_COMPILE AND JAVA_RUNTIME AND JAVA_ARCHIVE AND NOT MINGW)
       GET_FILENAME_COMPONENT(JNIPATH ${JAVA_COMPILE} PATH)
       FIND_FILE(JNI_H jni.h
         "${JNIPATH}/../include"
@@ -897,7 +897,7 @@ IF(BUILD_TESTING)
             --test-command ${JAVA_RUNTIME} -classpath hello.jar HelloWorld)
         ENDIF("${JNI_FILE}" MATCHES "JDK1_2")
       ENDIF(JNI_H) 
-    ENDIF(JAVA_COMPILE AND JAVA_RUNTIME AND JAVA_ARCHIVE)
+    ENDIF(JAVA_COMPILE AND JAVA_RUNTIME AND JAVA_ARCHIVE AND NOT MINGW)
   ENDIF(CMAKE_GENERATOR MATCHES "Makefiles")
     
   IF (CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE OR WXWINDOWS_INCLUDE_DIR)