add define of DISABLE_GLOBAL_POINTERS back to configure.ac, update comments to include ref to README.symbian
add define of DISABLE_GLOBAL_POINTERS back to configure.ac, update comments
to include ref to README.symbian


git-svn-id: 42b1393cca5d551bec90c34575d0b84245f1dba8@7204 0101bb08-14d6-0310-b084-bc0e0c8e3800

lowlevel-studios/speex-android,jiangjianping/speex,Distrotech/speex,ksophocleous/speex,lu-zero/speex,felipebetancur/speexdsp,maolin-cdzl/speexdsp,lowlevel-studios/speex-android,maolin-cdzl/speexdsp,ksophocleous/speexdsp,felipebetancur/speex,mwgoldsmith/speex,lu-zero/speex,maolin-cdzl/speexdsp,felipebetancur/speex,jiangjianping/speex,Distrotech/speex,mwgoldsmith/speex,ksophocleous/speexdsp,lowlevel-studios/speex-android,ksophocleous/speex,ksophocleous/speexdsp,jiangjianping/speex,felipebetancur/speex,felipebetancur/speexdsp,maolin-cdzl/speexdsp,mwgoldsmith/speex,felipebetancur/speexdsp,felipebetancur/speex,felipebetancur/speexdsp,jiangjianping/speex,ksophocleous/speexdsp,jiangjianping/speex,ksophocleous/speex,lu-zero/speex,Distrotech/speex,Distrotech/speex,mwgoldsmith/speex