GDBM-1.20

Reference: 8.36. GDBM-1.20. Fix the build system:

patch -Np1 -i gdbm-1.20-bld-20220208.patch

Build and install the package:

./configure --prefix=/qlnx \
            --enable-libgdbm-compat \
            --includedir=/qlnx/inc \
            --datarootdir=/qlnx/dat \
            --mandir=/qlnx/man \
            --infodir=$LFS/tmp

make
make install