Minimal set up for autotools

- ./configure --with-local-path=/some/path
  --with-<pdk>-source=/some/other/path added; check ./configure --help
- Minimal checks for magic and python version
- .gitignore updated to ignore auto* and open_pdks artifacts
diff --git a/.gitignore b/.gitignore
index 38d0f2e..77cb82d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,13 @@
 **/.DS_Store
 **/.Trashes/
 
+# script artifacts
+*_install.log
+*_migrate.log
+
+# autotools artifacts
+scripts/*
+!scripts/configure
+!scripts/configure.ac
+**/Makefile
+**/Makefile.am