Change lib/wx/configure.in DEBUG_CFLAGS and CFLAGS to remove C compiler "-g" from non-debug build

[Kenji Rikitake]

git fetch git://github.com/jj1bdx/otp.git wx_debugflag_fix

Change lib/wx/configure.in DEBUG_CFLAGS and CFLAGS to remove C compiler 
"-g" from non-debug build

This patch removes "-g" from the CFLAGS for building wx.
The UNIX portion of this patch has been tested and working
on the FreeBSD port.  For other OSes this is still untested.

This patch is originally taken from FreeBSD port patch files.

Regards,
Kenji Rikitake