Check if $cc and $ARCH variables exist from command line#14

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neilalexander wants to merge 2 commits intoUCIS:masterfrom

neilalexander:master

Commits on Mar 13, 2017

Don't set $cc in build.sh if already exists, i.e. for cc="mipsel-linux-gnu-cc" ./build.sh
neilalexander
committed
Don't set $ARCH in deb/build.sh if already exists
neilalexander
committed