On branch thirdparty-freebsd-amd64 buildtcc.sh needs a fix

[bakul]

A linking failure, at least with the latest tcc (4410dbd):

cc -o tcc tcc.o libtcc.a -lm -lpthread -g
ld: error: undefined symbol: tcc_new
>>> referenced by tcc.c:283
>>>               lto.tmp:(main)

etc. The following fixes it:

diff --git a/buildtcc.sh b/buildtcc.sh
index 32faa74..81bc042 100644
--- a/buildtcc.sh
+++ b/buildtcc.sh
@@ -11,7 +11,7 @@ git clone git://repo.or.cz/tinycc.git
 cd tinycc

 export CC=cc
-export CFLAGS='-O3 -flto'
+export CFLAGS='-O3'

 ./configure \
             --prefix=thirdparty/tcc \

Ideally the script should exit 1 when any step fails rather than try to copy things in v/thirdparty/tcc