[patch] fix some warnings

[Andrew Haley]

Andreas Tobler writes:
 > Hello,
 > 
 > here another one, please review. It fixes some uninitialized variables 
 > and ifdef some unused.
 > 
 > ok, for main?
 > 
 > Andreas
 > 
 > 2005-03-04  Andreas Tobler  <a.tobler@schweiz.ch>
 > 
 > 	* java/lang/dtoa.c (_dtoa_r): Initialize variables ilim, ilim1 and
 > 	spec_case. Initialize pointer mlo.
 > 
 > 	* java/lang/strtod.c (_strtod_r): Initialize pointers bb, bd, ds and
 > 	delta.
 > 
 > 	* java/lang/e_asin.c (__ieee754_asin): Initialize variable t.
 > 
 > 	* java/lang/e_exp.c (__ieee754_exp): Initialize variables hi, lo
 > 	and k.
 > 
 > 	* java/lang/e_rem_pio2.c (__ieee754_rem_pio2): Initialize
 > 	uninitialized variable z.
 > 
 > 	* gnu/java/net/natPlainDatagramSocketImplPosix.cc (mcastGrp): Ifdef
 > 	possible unused variables.

OK.

Andrew.