Generating Java JNI header files

This external tool creates the corresponding JNI header file with the same
name and location as the source file but with the extension .h instead of

Copy the javah.xml to the idea\config\tools\javah.xml, thats all
Works for IDEA2.x and IDEA3 for all platforms.
Forward slashes are used. Java converts it to back slashes on win32
This external tool calls javah.exe with the right parameters.

It is importent that you compile the source files before calling this tool.