CF_CC_ENV_FLAGS breaks ccache build

[Enrico Scholz]

Hello,

the CF_CC_ENV_FLAGS code in recent snapshots (20160625) breaks builds
where CC looks like

| CC="ccache arm-linux-gnueabi-gcc  -march=armv7ve -marm -mfpu=neon-vfpv4  
-mfloat-abi=hard ..."

(that's a common setup e.g. in the OpenEmbedded/Yocto build environment)

It messes up CFLAGS completely by adding 'arm-linux-gnueabi-gcc' to it.


I am in doubt about the usefulness of CF_CC_ENV_FLAGS and I am not sure
what you want to get with it.  But at least, I would trigger it only
when '-[IDU]' is in CC.



Enrico