Index: lowercase.py
===================================================================
--- lowercase.py	(revision 0)
+++ lowercase.py	(revision 0)
@@ -0,0 +1,22 @@
+# http://stackoverflow.com/questions/3075443/python-recursively-remove-capitalisation-from-directory-structure
+import os
+
+def lowercase_rename( dir ):
+    # renames all subforders of dir, not including dir itself
+    def rename_all( root, items):
+        for name in items:
+            try:
+                os.rename( os.path.join(root, name),
+                                    os.path.join(root, name.lower()))
+            except OSError:
+                pass # can't rename it, so what
+
+    # starts from the bottom so paths further up remain valid after renaming
+    for root, dirs, files in os.walk( dir, topdown=False ):
+        rename_all( root, dirs )
+        rename_all( root, files)
+
+if __name__ == '__main__':
+    import sys
+    dir = sys.argv[1]
+    lowercase_rename(dir)
Index: Makefile
===================================================================
--- Makefile	(revision 7072)
+++ Makefile	(working copy)
@@ -507,11 +507,4 @@
 
 
 lowercase:
-	$(Q)for i in \
-		"$(SGPDATADIR)"/Data/*.[Ss][Ll][Ff] \
-		"$(SGPDATADIR)"/Data/TILECACHE/*.[Jj][Ss][Dd] \
-		"$(SGPDATADIR)"/Data/TILECACHE/*.[Ss][Tt][Ii]; \
-	do \
-		lower="`dirname "$$i"`/`basename "$$i" | LANG=C tr '[A-Z]' '[a-z]'`"; \
-		[ "$$i" = "$$lower" ] || mv "$$i" "$$lower"; \
-	done
+	$(Q)python lowercase.py $(SGPDATADIR)

find /home/test/ -name "*[A-Z]*" -printf "%h:%f
" | awk 'BEGIN{q="\047";FS=":"}
{
 newpath = $1"/"tolower($2)
 cmd = "mv "q $1"/"$2 q" "q newpath q 
 system(cmd)
}
'

for if in $(find data); do of=$(echo $if | tr [] [:lower]); mv $if $of; done