Replace .hgignore with .gitignore.

.gitignore

@@ -1,28 +1,27 @@
 # Binaries
-\.dll$
-\.dylib$
-\.exe$
-\.so$
+*.dll
+*.dylib
+*.exe
+*.so
 
 # Files generated by Visual Studio
-\.aps$
-\.ncb$
-\.sdf$
-\.suo$
-\.user$
+*.aps
+*.ncb
+*.sdf
+*.suo
+*.user
 
 # Build directories
-/Debug.*
-/Release.*
+Debug.*/
+Release.*/
 
 # Files generated by Mac OS X Finder
-(^|/)\.DS_Store$
+.DS_Store
 
 # Files generated by Windows Explorer
-(^|/)Desktop\.ini$
-(^|/)Thumbs\.db$
+[Dd]esktop.ini
+[Tt]humbs.db
 
 # AMBuild build directories
-syntax: glob
-build/*
+build/
 obj-*/