Remove pagesize from malloc_par after it was removed in Glib v2.15.

diff ../glibc-2.14/malloc/malloc.c  ../glibc-2.15/malloc/malloc.c

2421,2423d1847
<   /* Cache malloc_getpagesize */
<   unsigned int     pagesize;
--
Merge pull request #2 from rogerhu/fix_mp

Remove pagesize from malloc_par after it was removed in Glib v2.15.  Thanks to rogerhu.