Typo in generic-build-script

[Harold L Hunt II]

There is the following in the gbs:
if [ -z "$MY_CFLAGS" ]; then
  MY_CFLAGS="-O2"
fi
if [ -z "$MY_CFLAGS" ]; then
  MY_LDFLAGS=
fi
It appears that the second if should be testing '$MY_LDFLAGS', not 
'$MY_CFLAGS'.

Harold