Fix configure check for -lm to actually check if -lm is required
Fix configure check for -lm to actually check if -lm is required

AC_TRY_COMPILE doesn't try to link so we better use AC_TRY_LINK

libimobiledevice/libplist,libimobiledevice-win32/libplist,libimobiledevice-win32/libplist,libimobiledevice-win32/libplist,libimobiledevice-win32/libplist,libimobiledevice/libplist,libimobiledevice/libplist