pkg-config: fix prefix

pkg-config: fix prefix

Now:

% PATH=./staging_dir/host/bin:$PATH STAGING_PREFIX=/test PKG_CONFIG_PATH=$(echo staging_dir/target-*/usr/lib/pkgconfig) ./staging_dir/host/bin/pkg-config --cflags lua -I/test//include

After applying the patch:

% PATH=./staging_dir/host/bin:$PATH STAGING_PREFIX=/test PKG_CONFIG_PATH=$(echo staging_dir/target-*/usr/lib/pkgconfig) ./staging_dir/host/bin/pkg-config --cflags lua -I/test/include

I guess that there sould not be '//' but only one '/'.

Signed-off-by: Luka Perkov < openwrt ->-to->- lukaperkov.net >
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27744 3c298f89-4303-0410-b956-a3cf2f4a3e73