Modified foundry_install.py so that other scripts in the common/
directory can be found even if foundry_install.py is called from
a directory following a symbolic link.

common/foundry_install.py

diff --git a/common/foundry_install.py b/common/foundry_install.py
index 904d9ab..5aca657 100755
--- a/common/foundry_install.py
+++ b/common/foundry_install.py
@@ -533,7 +533,8 @@
     os.makedirs(targetdir, exist_ok=True)
 
     # Here's where common scripts are found:
-    scriptdir = os.path.split(os.getcwd())[0] + '/common'
+    openpdksdir = os.path.dirname(os.path.realpath(__file__))
+    scriptdir = os.path.split(openpdksdir)[0] + '/common'
 
     #----------------------------------------------------------------
     # Installation part 1:  Install files into the staging directory