Certain versions of recent gcc (e.g., gcc 6.3.0 on ubuntu17.04)
has pie enabled by default at linker (collect2) stage.
The compilation flag "-no-pie" is available to negate
this linker option.

Add -no-pie to compilation flag only if it is available.
Earlier gcc compiler may not have this option but it does
not have linker pie on-by-default either.

Tested with ubuntu 17.04 and my local gcc 4.8.5 (not accepting -no-pie).
Signed-off-by: Yonghong Song <yhs@fb.com>