gitignore: Add `semantic.cache' and Global droppings.

diff --git a/gitignore b/gitignore
index d17316d..8602ee4 100644 (file)
--- a/gitignore
+++ b/gitignore
@@ -5,11 +5,19 @@
 \#*
 .#*
 
+semantic.cache
+
 ## STG clutter.
 .stgit-edit.txt
 *.ancestor
 *.patched
 
+## Global clutter.
+GPATH
+GRTAGS
+GSYMS
+GTAGS
+
 ## Build and release directories.
 build
 build-*