Modified the Makefile to install some of the common scripts into
the destination at /usr/share/pdk. Corrected the patch from
xschem for sky130_fd_pr, which was applied backwards.
diff --git a/scripts/configure.ac b/scripts/configure.ac
index b358eef..be17018 100755
--- a/scripts/configure.ac
+++ b/scripts/configure.ac
@@ -1,5 +1,7 @@
AC_INIT([open_pdks], [1.0], [github.com/RTimothyEdwards/open_pdks])
+AC_PREFIX_DEFAULT(/usr/share)
+
## REQUIRES: https://www.gnu.org/software/autoconf-archive/ax_python_module.html#ax_python_module
AM_PATH_PYTHON([3.4])
AX_PYTHON_MODULE([distutils],[])
