Update build script for cmake changes

Author: bording

build.libgit2.sh

@@ -27,9 +27,8 @@ pushd libgit2/build
 export _BINPATH=`pwd`
 
 cmake -DCMAKE_BUILD_TYPE:STRING=Release \
-      -DBUILD_CLAR:BOOL=OFF \
+      -DBUILD_TESTS:BOOL=OFF \
       -DUSE_SSH=OFF \
-      -DENABLE_TRACE=ON \
       -DLIBGIT2_FILENAME=git2-$SHORTSHA \
       -DCMAKE_OSX_ARCHITECTURES=$OSXARCHITECTURE \
       -DUSE_HTTPS=$USEHTTPS \