Patch: Add methods to GCInfo to allow GC_free_space_divisor to be manipulated.

[David Daney]

Ever since the GC's internal symbols quit being exported by libgcj.so, 
it has been impossible to change the GC_free_space_divisor.  We need to 
be able to tune this value in restricted memory environments to prevent 
OutOfMemoryErrors.

This patch adds a couple of methods to the new gnu.gcj.util.GCInfo class 
that allow the GC_free_space_divisor parameter to be tuned.

Tested on x86_64-pc-linux-gnu.

OK to commit?

2007-10-18  David Daney  <ddaney@avtrex.com>

    * gnu/gcj/util/GCInfo.java (checkPermission): Renamed to ...
    (checkDumpPermission): ... this and updated references throughout.
    (checkParametersPermission, getGCFreeSpaceDivisor,
    setGCFreeSpaceDivisor): New methods.
    (getGCFreeSpaceDivisor0, setGCFreeSpaceDivisor0): Declare.
    * gnu/gcj/util/natGCInfo.cc: Move #includes outside of ifdef block.
    (getGCFreeSpaceDivisor0, setGCFreeSpaceDivisor0): New methods.
    * gnu/gcj/util/GCInfo.h: Regenerate.
    * classpath/lib/gnu/gcj/util/GCInfo.class: Ditto.

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