The attached patch removes the adding of extra
CFLAGS during ./configure.
This is needed because some of them can be
unstable on certain situations, or with certain
compilers (for example -O3 is unstable on 3.3,
while -O0 is known broken).
Also, -funroll-loops is sometimes slower than
default, and users don't care about warnings
(but cares about compile time, enabling always
all the warnings makes compile process
Diego "Flameeyes" Pettenň