[icedtea patch] DISTRIBUTION_PATCHES / jni include dir

[Thomas Fitzsimmons]

Matthias Klose wrote:
> actually two patches:
> 
>  - re-add DISTRIBUTION_PATCHES; this might be empty, but is very
>    conveniant to integrate patches before they are integrated in icedtea.

How would DISTRIBUTION_PATCHES be used?

> 
>  - when building with gcc version != gcj version, the jni headers are
>    not found. maybe this should become a new configure flag
>    --with-jni-include=<dir>

This seems fine, except why is "gcj" one of the installed symlinks?

Tom