Need reviewers - minor openjdk6 changes dealing with builds on Fedora 9

[Kelly O'Hair]

Annoying typo in the declaration of main(), GCC 4.3 nagged me. ;^)

6839117: freetype sanity checker has incorrect main() declaration
http://cr.openjdk.java.net/~ohair/jdk6/6839117-freetype-main/webrev/

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Hotspot (may need to apply 'const char' change to jdk7 too):

6838823: Definitions of arrays of strings triggers errors in gcc 4.3 on Fedora 9
http://cr.openjdk.java.net/~ohair/jdk6/6838823-hotspot-const-char/webrev/

This includes a change for our JPRT system that is only for jdk6.
   6831225: Upgrade JPRT jobs to use newer Linux 2.6 (e.g. Fedora 9)
By default anyone using this JPRT system would get builds done on Fedora 9
(2.6 kernel) machines rather than the old antique Linux systems used with
the Sun jdk6update releases.
Again, this hotspot source base could be swapped out for a much newer
version soon, I'll make sure these changes are in both, or more importantly,
we will make sure the hotspot in OpenJDK6 builds cleanly on Fedora 9
(which is the whole point of my exercise here :^).

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-kto